List of IBM PS/2 models

An assortment of IBM PS/2s in various form factors; from left to right: a Server 95, a Model 80, a Model 25, and a PS/2 E on top of a Model 56 and a Model 30 286

The Personal System/2 or PS/2 was a line of personal computers developed by International Business Machines Corporation (IBM). Released in 1987, the PS/2 represented IBM's second generation of personal computer following the original IBM PC series, which was retired following IBM's announcement of the PS/2 in April 1987. Most PS/2s featured the Micro Channel architecture bus—a closed standard which was IBM's attempt at recapturing control of the PC market. However some PS/2 models at the low end featured ISA buses, which IBM included with their earlier PCs and which were widely cloned due to being a mostly-open standard. Many models of PS/2 were made, which came in the form of desktops, towers, all-in-ones, portables, laptops and notebooks.

Notes

Legend
  ISA, 8-bit
  ISA, 16-bit
  Micro Channel, 16-bit
  Micro Channel, 32-bit
  MCA/ISA
  Other
Explanatory notes
  • Built-in or optional monitors are CRTs unless mentioned otherwise.
  • The Space Saving Keyboard is a 87-key numpad-less version of the Model M.[1]
  • The 25 Collegiate, intended for college students, had two 720 KB floppy drives, maxed out the RAM to 640 KB, and came packaged with the official PS/2 Mouse, Windows 2.0, and four blank floppy disks.[1][2]
  • Financial workstations came packaged with a 50-key function keypad and were intended for use in banks.[1][3]
  • LS models are "LAN Stations": essentially the same as their non-LS counterparts but without floppy drives or hard drives and that connect to networks using Ethernet or Token Ring adapters (in essence, diskless workstations).[4]
  • Ultimedia models shipped with a microphone and included SCSI CD-ROMs, M-Audio sound adapter cards and volume controls and headphone and microphone jacks at the front of the case.[5]
  • Array models are PS/2 Servers with support for RAID.[6]

Models

Main line

IBM PS/2 models
Model IBM P/N Processor Clock speed
(MHz)		 Bus No. of
slots		 No. of
drive bays		 FDD HDD Stock
RAM		 Maximum
RAM		 Video adapter Monitor Form factor Date introduced Notes Ref(s).
25 8525-001 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. monochrome All-in-one August 1987 Space Saving Keyboard [7]
25 8525-004 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. color All-in-one August 1987 Space Saving Keyboard [7]
25 8525-G01 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. monochrome All-in-one August 1987 [1]
25 8525-G04 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. color All-in-one August 1987 [1]
25 Collegiate 8525-C02 Intel 8086 8 (0 w) ISA, 8-bit 2 2 two 720 KB none 640 KB 640 KB MCGA 12-in. monochrome All-in-one August 1987 Space Saving Keyboard [8]
25 Collegiate 8525-C05 Intel 8086 8 (0 w) ISA, 8-bit 2 2 two 720 KB none 640 KB 640 KB MCGA 12-in. color All-in-one August 1987 Space Saving Keyboard [8]
25 Collegiate 8525-K02 Intel 8086 8 (0 w) ISA, 8-bit 2 2 two 720 KB none 640 KB 640 KB MCGA 12-in. monochrome All-in-one August 1987 [8]
25 Collegiate 8525-K05 Intel 8086 8 (0 w) ISA, 8-bit 2 2 two 720 KB none 640 KB 640 KB MCGA 12-in. color All-in-one August 1987 [8]
25 LS 8525-L01 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. monochrome All-in-one August 1987 Token Ring [1]
25 LS 8525-L04 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 720 KB none 512 KB 640 KB MCGA 12-in. color All-in-one August 1987 Token Ring [1]
25 286 8525-006 Intel 80286 10 (1 w) ISA, 16-bit 2 2 one 1.44 MB none 1 MB 4 MB VGA 12-in. color All-in-one October 1990 Space Saving Keyboard [9]
25 286 8525-036 Intel 80286 10 (1 w) ISA, 16-bit 2 2 one 1.44 MB 30 MB (ST-506) 1 MB 4 MB VGA 12-in. color All-in-one October 1990 [9]
25 286 8525-G06 Intel 80286 10 (1 w) ISA, 16-bit 2 2 one 1.44 MB none 1 MB 4 MB VGA 12-in. color All-in-one October 1990 Space Saving Keyboard [9]
25 286 8525-G36 Intel 80286 10 (1 w) ISA, 16-bit 2 2 one 1.44 MB 30 MB (ST-506) 1 MB 4 MB VGA 12-in. color All-in-one October 1990
25 SX 8525-K00 Intel 386SX 20 ISA, 16-bit 3 2 one 1.44 MB none 1 MB 16 MB VGA 12-in. color All-in-one April 1992 [10][11]
25 SX 8525-K01 Intel 386SX 20 ISA, 16-bit 3 2 one 1.44 MB none 1 MB 16 MB VGA 12-in. color All-in-one April 1992 Ethernet [10][11]
25 SX 8525-L02 Intel 386SX 20 ISA, 16-bit 3 2 one 1.44 MB none 1 MB 16 MB VGA 12-in. color All-in-one April 1992 Token Ring [10][11]
30 8530-001 Intel 8086 8 (0 w) ISA, 8-bit 3 2 one 720 KB none 640 KB 640 KB MCGA optional Desktop April 1989 Replaces the 8530-002 [12][13]
30 8530-002 Intel 8086 8 (0 w) ISA, 8-bit 3 2 two 720 KB none 640 KB 640 KB MCGA optional Desktop April 1987 [14]
30 8530-021 Intel 8086 8 (0 w) ISA, 8-bit 3 2 one 720 KB 20 MB (ST-506) 640 KB 640 KB MCGA optional Desktop April 1987 [14]
30 8530-R02 Intel 8086 8 (0 w) ISA, 8-bit 3 2 two 720 KB none 640 KB 640 KB MCGA optional Desktop November 1987 Financial workstation [1][15]
30 8530-R21 Intel 8086 8 (0 w) ISA, 8-bit 3 2 one 720 KB 20 MB (ST-506) 640 KB 640 KB MCGA optional Desktop November 1987 Financial workstation [1][15]
30 286 8530-E01 Intel 80286 10 (1 w) ISA, 16-bit 3 2 one 1.44 MB none 512 KB 4 MB VGA optional Desktop September 1988 [16]
30 286 8530-E21 Intel 80286 10 (1 w) ISA, 16-bit 3 2 one 1.44 MB 20 MB (ST-506) 512 KB 4 MB VGA optional Desktop September 1988 [16]
30 286 8530-E31 Intel 80286 10 (1 w) ISA, 16-bit 3 2 one 1.44 MB 30 MB (ESDI) 512 KB 4 MB VGA optional Desktop September 1989 [17]
30 286 8530-E41 Intel 80286 10 (1 w) ISA, 16-bit 3 2 one 1.44 MB 40 MB (ESDI) 512 KB 4 MB VGA optional Desktop April 1991 [18]
35 SX 8535-040 Intel 386SX 20 (0–2 w) ISA, 16-bit 3 2 one 1.44 MB none 2 MB 4 MB VGA optional Desktop January 1991 [19]
35 SX 8535-043 Intel 386SX 20 (0–2 w) ISA, 16-bit 3 2 one 1.44 MB 40 MB (IDE) 2 MB 4 MB VGA optional Desktop January 1991 [19]
35 SX 8535-045 Intel 386SX 20 (0–2 w) ISA, 16-bit 3 2 one 1.44 MB 80 MB (IDE) 2 MB 4 MB VGA optional Desktop Un­known [20]
35 LS 8535-14X Intel 386SX 20 ISA, 16-bit 3 2 none none 2 MB 4 MB VGA optional Desktop January 1991 Ethernet [19]
35 LS 8535-24X Intel 386SX 20 ISA, 16-bit 3 2 none none 2 MB 4 MB VGA optional Desktop January 1991 Token Ring [19]
35 SLC 8535-050 IBM 386SLC 20 (0 w) ISA, 16-bit 3 2 one 2.88 MB none 2 MB 16 MB VGA optional Desktop April 1992 [21]
35 SLC 8535-053 IBM 386SLC 20 (0 w) ISA, 16-bit 3 2 one 1.44 MB 80 MB (IDE) 2 MB 16 MB VGA optional Desktop April 1992 [22]
35 SLC 8535-055 IBM 386SLC 20 (0 w) ISA, 16-bit 3 2 one 2.88 MB 80 MB (IDE) 2 MB 16 MB VGA optional Desktop April 1992 [21][23]
40 SX 8540-040 Intel 386SX 20 (0–2 w) ISA, 16-bit 5 4 one 1.44 MB none 2 MB 16 MB VGA optional Desktop June 1991 [24]
40 SX 8540-043 Intel 386SX 20 (0–2 w) ISA, 16-bit 5 4 one 1.44 MB 40 MB (IDE) 2 MB 16 MB VGA optional Desktop June 1991 [24]
40 SX 8540-045 Intel 386SX 20 (0–2 w) ISA, 16-bit 5 4 one 1.44 MB 80 MB (IDE) 2 MB 16 MB VGA optional Desktop June 1991 [24]
40 SLC 8540-050 IBM 386SLC 20 (0 w) ISA, 16-bit 5 4 one 1.44 MB none 2 MB 16 MB VGA optional Desktop April 1992 [25]
40 SLC 8540-055 IBM 386SLC 20 (0 w) ISA, 16-bit 5 4 one 1.44 MB 80 MB (IDE) 2 MB 16 MB VGA optional Desktop April 1992 [25]
50 8550-021 Intel 80286 10 (1 w) MCA, 16-bit 4 3 one 1.44 MB 20 MB (ST-506) 1 MB 1 MB VGA optional Desktop April 1987 [26][27]
50 Z 8550-031 Intel 80286 10 (0 w) MCA, 16-bit 4 3 one 1.44 MB 30 MB (ST-506) 1 MB 2 MB VGA optional Desktop June 1988 [28][27]
50 Z 8550-061 Intel 80286 10 (0 w) MCA, 16-bit 4 3 one 1.44 MB 60 MB (ESDI) 1 MB 2 MB VGA optional Desktop June 1988 [28][27]
55 SX 8555-031 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 one 1.44 MB 30 MB (ESDI) 2 MB 8 MB VGA optional Desktop May 1989 [29][27]
55 SX 8555-041 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 one 1.44 MB 40 MB (ESDI) 2 MB 8 MB VGA optional Desktop June 1991 [30][27]
55 SX 8555-061 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 one 1.44 MB 60 MB (ESDI) 2 MB 8 MB VGA optional Desktop May 1989 [29][27]
55 SX 8555-081 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 one 1.44 MB 80 MB (ESDI) 2 MB 8 MB VGA optional Desktop June 1991 [30][27]
55 LS 8555-LE0 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 none none 2 MB 8 MB VGA optional Desktop October 1990 [29][31]
55 LS 8555-LT0 Intel 386SX 16 (0–2 w) MCA, 16-bit 3 2 none none 2 MB 8 MB VGA optional Desktop October 1990 [29][31]
56 SX 8556-043 Intel 386SX 20 MCA, 16-bit 3 2 one 2.88 MB 40 MB (SCSI) 4 MB 8 MB VGA optional Desktop October 1991 [32]
56 SX 8556-045 Intel 386SX 20 MCA, 16-bit 3 3 one 2.88 MB 80 MB (SCSI) 4 MB 8 MB VGA optional Desktop October 1991 [32]
56 SX 8556-049 Intel 386SX 20 MCA, 16-bit 3 3 one 2.88 MB 160 MB (SCSI) 4 MB 8 MB VGA optional Desktop October 1991 [32]
56 LS 8556-14X Intel 386SX 20 MCA, 16-bit 3 3 none none 4 MB 8 MB VGA optional Desktop February 1992 Ethernet [32][33]
56 LS 8556-24X Intel 386SX 20 MCA, 16-bit 3 3 none none 4 MB 8 MB VGA optional Desktop February 1992 Token Ring [32][33]
56 SLC 8556-053 IBM 386SLC 20 MCA, 16-bit 3 2 one 2.88 MB 40 MB (SCSI) 4 MB 16 MB VGA optional Desktop Un­known [22]
56 SLC 8556-055 IBM 386SLC 20 MCA, 16-bit 3 2 one 2.88 MB 80 MB (SCSI) 4 MB 16 MB VGA optional Desktop February 1992 [34]
56 SLC 8556-059 IBM 386SLC 20 MCA, 16-bit 3 2 one 2.88 MB 160 MB (SCSI) 4 MB 16 MB VGA optional Desktop February 1992 [34]
56 SLC LS 8556-25X IBM 386SLC 20 MCA, 16-bit 3 2 none none 4 MB 16 MB VGA optional Desktop February 1992 Token Ring [34]
56 SLC LS 8556-15X IBM 386SLC 20 MCA, 16-bit 3 2 none none 4 MB 16 MB VGA optional Desktop February 1992 Ethernet [34]
57 SX 8557-045 Intel 386SX 20 MCA, 16-bit 5 4 one 2.88 MB 80 MB (SCSI) 4 MB 16 MB VGA optional Desktop June 1991 [35]
57 SX 8557-049 Intel 386SX 20 MCA, 16-bit 5 4 one 2.88 MB 160 MB (SCSI) 4 MB 16 MB VGA optional Desktop June 1991 [35]
57 SLC 8557-055 IBM 386SLC 20 MCA, 16-bit 5 4 one 2.88 MB 80 MB (SCSI) 4 MB 16 MB VGA optional Desktop February 1992 Token Ring [36]
57 SLC 8557-059 IBM 386SLC 20 MCA, 16-bit 5 4 one 2.88 MB 160 MB (SCSI) 8 MB 16 MB VGA optional Desktop February 1992 [36]
57 SLC 8557-05F IBM 386SLC 20 MCA, 16-bit 5 4 one 2.88 MB 400 MB (SCSI) 8 MB 16 MB VGA optional Desktop February 1992 [36]
Ultimedia M57 SLC 8557-255 IBM 386SLC 20 MCA, 16-bit 5 4 one 2.88 MB 80 MB (SCSI) 4 MB 16 MB VGA optional Desktop February 1992 [37]
Ultimedia M57 SLC 8557-259 IBM 386SLC 20 MCA, 16-bit 5 4 one 2.88 MB 160 MB (SCSI) 4 MB 16 MB VGA optional Desktop February 1992 [37]
60 8560-041 Intel 80286 10 (1 w) MCA, 16-bit 8 4 one 1.44 MB 44 MB (ST-506) 1 MB 7 MB VGA optional Tower April 1987 [38][39]
60 8560-071 Intel 80286 10 (1 w) MCA, 16-bit 8 4 one 1.44 MB 70 MB (ESDI) 1 MB 7 MB VGA optional Tower April 1987 [38][39]
65 SX 8565-061 Intel 386SX 16 MCA, 16-bit 8 4 one 1.44 MB 60 MB (SCSI) 2 MB 8 MB VGA optional Tower March 1990 [40][41]
65 SX 8565-121 Intel 386SX 16 MCA, 16-bit 8 4 one 1.44 MB 120 MB (SCSI) 2 MB 8 MB VGA optional Tower March 1990 [40][41]
65 SX 8565-321 Intel 386SX 16 MCA, 16-bit 8 4 one 1.44 MB 320 MB (SCSI) 2 MB 8 MB VGA optional Tower October 1990 [42][37]
70 386 8570-061 Intel 386 20 MCA, 32-bit 3 3 one 1.44 MB 60 MB (ESDI) 2 MB 6 MB VGA optional Desktop September 1989 [43]
70 386 8570-081 Intel 386 20 MCA, 32-bit 3 3 one 1.44 MB 60 MB (ESDI) 4 MB 6 MB VGA optional Desktop June 1991 [37]
70 386 8570-121 Intel 386 20 MCA, 32-bit 3 3 one 1.44 MB 120 MB (ESDI) 2 MB 6 MB VGA optional Desktop June 1988 [43][44]
70 386 8570-161 Intel 386 20 MCA, 32-bit 3 3 one 1.44 MB 160 MB (ESDI) 4 MB 6 MB VGA optional Desktop June 1991 [43]
70 386 8570-A16 Intel 386 25 MCA, 32-bit 3 3 one 1.44 MB 160 MB (ESDI) 4 MB 6 MB VGA optional Desktop June 1991 [37]
70 386 8570-A21 Intel 386 25 MCA, 32-bit 3 3 one 1.44 MB 120 MB (ESDI) 2 MB 6 MB VGA optional Desktop December 1988 [43][37][44][45][46]
70 386 8570-A61 Intel 386 25 MCA, 32-bit 3 3 one 1.44 MB 60 MB (ESDI) 2 MB 6 MB VGA optional Desktop September 1989 [43][37]
70 386 8570-A81 Intel 386 25 MCA, 32-bit 3 3 one 1.44 MB 80 MB (ESDI) 4 MB 6 MB VGA optional Desktop June 1991 [37]
70 386 8570-E61 Intel 386 16 MCA, 32-bit 3 3 one 1.44 MB 60 MB (ESDI) 1 MB 6 MB VGA optional Desktop June 1988 [43][44]
70 486 8570-B21 Intel 486 25 MCA, 32-bit 3 3 one 1.44 MB 120 MB (ESDI) 2 MB 8 MB VGA optional Desktop December 1989 [47][37][48]
70 486 8570-B61 Intel 486 25 MCA, 32-bit 3 3 one 1.44 MB 60 MB (ESDI) 2 MB 8 MB VGA optional Desktop December 1989 [47][37][48]
80 8580-041 Intel 386 16 MCA, 32-bit 8 5/6 one 1.44 MB 44 MB (ST-506) 1 MB 2 MB VGA optional Tower July 1987 [49][50][51][39]
80 8580-071 Intel 386 16 MCA, 32-bit 8 5/6 one 1.44 MB 70 MB (ESDI) 1 MB 2 MB VGA optional Tower July 1987 [49][50][51][39]
80 8580-081 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 80 MB (SCSI) 2 MB 4 MB VGA optional Tower October 1990 [52]
80 8580-111 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 115 MB (ESDI) 2 MB 4 MB VGA optional Tower November 1987 [49][50][39][53]
80 8580-121 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 120 MB (SCSI) 2 MB 4 MB VGA optional Tower March 1990 [40]
80 8580-161 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 160 MB (SCSI) 2 MB 4 MB VGA optional Tower October 1990 [52]
80 8580-311 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 314 MB (ESDI) 2 MB 4 MB VGA optional Tower January 1988 [54][39][55]
80 8580-321 Intel 386 20 MCA, 32-bit 8 5/6 one 1.44 MB 320 MB (SCSI) 2 MB 4 MB VGA optional Tower March 1990 [40]
80 8580-A16 Intel 386 25 MCA, 32-bit 8 5/6 one 1.44 MB 160 MB (SCSI) 4 MB 8 MB VGA optional Tower October 1990 [52]
80 8580-A21 Intel 386 25 MCA, 32-bit 8 5/6 one 1.44 MB 120 MB (SCSI) 4 MB 8 MB VGA optional Tower March 1990 [40]
80 8580-A31 Intel 386 25 MCA, 32-bit 8 5/6 one 1.44 MB 320 MB (SCSI) 4 MB 8 MB VGA optional Tower March 1990 [40]
53 SLC2 9553-0B7 IBM 486SLC2 50 MCA, 16-bit 3 3 one 1.44 MB 120 MB (IDE) 4 MB 16 MB SVGA optional Desktop November 1993 Reply board [56][57]
53 SLC2 9553-0BB IBM 486SLC2 50 MCA, 16-bit 3 3 one 1.44 MB 250 MB (IDE) 4 MB 16 MB SVGA optional Desktop November 1993 Reply board [56][57]
53 LS 9553-1BX IBM 486SLC2 50 MCA, 16-bit 3 3 none none 4 MB 16 MB SVGA optional Desktop November 1993 Reply board, Ethernet [56]
53 LS 9553-2BX IBM 486SLC2 50 MCA, 16-bit 3 3 none none 4 MB 16 MB SVGA optional Desktop November 1993 Reply board, Token Ring [56]
56 486SLC2 9556-0B6 IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 [58]
56 486SLC2 9556-0BA IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 [58]
56 486SLC2 9556-1BX IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB none 4 MB 16 MB XGA-2 optional Desktop Un­known Ethernet [22]
56 486SLC2 9556-2BX IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB none 4 MB 16 MB XGA-2 optional Desktop Un­known Token Ring [22]
56 486SLC2 9556-ABX IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB none 4 MB 16 MB XGA-2 optional Desktop Un­known [22]
56 486SLC2 9556-DB6 IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop October 1992 [59]
56 486SLC2 9556-DBA IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop October 1992 [59]
56 486SLC2 9556-KB6 IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop May 1993 [57]
56 486SLC2 9556-KBA IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop May 1993 [57]
56 486SLC2 9556-QB6 IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop May 1993 [57]
56 486SLC2 9556-QBA IBM 486SLC2 50 MCA, 16-bit 3 2 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop May 1993 [57]
56 486SLC3 9556-DE9 IBM 486SLC3 75 MCA, 16-bit 3 3 one 2.88 MB 170 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 [60]
56 486SLC3 9556-DEB IBM 486SLC3 75 MCA, 16-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 [60]
56 486SLC3 9556-DED IBM 486SLC3 75 MCA, 16-bit 3 3 one 2.88 MB 340 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 [60][61]
56 486SLC3 LS 9556-1EX IBM 486SLC3 75 MCA, 16-bit 3 3 none none 4 MB 16 MB XGA-2 optional Desktop February 1994 Ethernet [61][62]
56 486SLC3 LS 9556-2EX IBM 486SLC3 75 MCA, 16-bit 3 3 none none 4 MB 16 MB XGA-2 optional Desktop February 1994 Token Ring [61][62]
57 486SLC2 9557-0B6 IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 [57]
57 486SLC2 9557-0BA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 [57]
57 486SLC2 9557-0BF IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 400 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop Un­known [22]
57 486SLC2 9557-0BG IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop Un­known [22]
Ultimedia M57 486SLC2 9557-1BA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 [63]
Ultimedia M57 486SLC2 9557-2BA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop September 1992 ActionMedia II Adapter [63]
57 486SLC2 9557-DB6 IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop October 1992 [64]
57 486SLC2 9557-DBA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop October 1992 [64]
57 486SLC2 9557-DBG IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop July 1993 [22][65]
57 486SLC2 9557-KB6 IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop July 1993 [22][65]
57 486SLC2 9557-KBA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop July 1993 [22][65]
57 486SLC2 9557-KBG IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop July 1993 [22][65]
57 486SLC2 9557-QB6 IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 104 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop April 1993 [22][65]
57 486SLC2 9557-QBA IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop April 1993 [22][65]
57 486SLC2 9557-V01 IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 2×212 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop June 1992 [22]
57 486SLC2 9557-xEB IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 245 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop January 1994 [22]
57 486SLC2 9557-xEG IBM 486SLC2 50 MCA, 16-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop January 1994 [22]
57 486SLC3 9557-DE9 IBM 486SLC3 75 MCA, 16-bit 5 5 one 2.88 MB 270 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 [60]
57 486SLC3 9557-DEB IBM 486SLC3 75 MCA, 16-bit 5 5 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 [60]
57 486SLC3 9557-DED IBM 486SLC3 75 MCA, 16-bit 5 5 one 2.88 MB 270 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 Includes CD-ROM and audio card [60][61]
57 486SLC3 9557-DEG IBM 486SLC3 75 MCA, 16-bit 5 5 one 2.88 MB 540 MB (SCSI) 8 MB 16 MB XGA-2 optional Desktop February 1994 Includes CD-ROM and audio card [60][61]
76 486 9576-0U6 Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 104 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop September 1992 [66][57]
76 486 9576-0UA Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop September 1992 [66][57]
76 486 9576-DU6 Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 104 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop August 1993 [57]
76 486 9576-DUA Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop August 1993 [57]
76 486 9576-KU6 Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 104 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [57]
76 486 9576-KUA Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [57]
76 486 9576-QU6 Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 104 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [57]
76 486 9576-QUA Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [57]
76i 9576-ANB Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 IDE [57]
76i 9576-ATB Intel 486DX4 100 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 IDE [57]
76i 9576-AU9 Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 170 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 IDE [57]
76i 9576-AUB Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 IDE [57]
76s 9576-BNB Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 SCSI [57]
76s 9576-BTB Intel 486DX4 100 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 SCSI [57]
76s 9576-BUB Intel 486SX 33 MCA, 32-bit 3 3 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 SCSI [57]
77 486 9577-0UA Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 400 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
77 486 9577-0UF Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
77 486 9577-DU6 Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 104 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop Un­known [22]
77 486 9577-DUA Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop July 1993 [22]
77 486 9577-DUG Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop July 1993 [22]
77 486 9577-KUA Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486 9577-KUF Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 400 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486 9577-KUG Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486 9577-QUA Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486DX2 9577-0NA Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
77 486DX2 9577-0NF Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 400 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
77 486DX2 9577-DNA Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop July 1993 [22]
77 486DX2 9577-DNG Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 540 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop July 1993 [22]
77 486DX2 9577-KNA Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486DX2 9577-KNG Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 540 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop May 1993 [22]
77 486DX2 9577-QNA Intel 486DX2 66 MCA, 32-bit 3 3 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop April 1993 [22]
Ultimedia M77 486 9577-1UA Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
Ultimedia M77 486DX2 9577-1NA Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 212 MB (SCSI) 8 MB 32 MB XGA-2 optional Desktop October 1992 [5]
77i 9577-ANB Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 270 MB (IDE) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77i 9577-ANG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 527 MB (IDE) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77i 9577-ATB Intel 486DX4 100 MCA, 32-bit 5 4 one 2.88 MB 270 MB (IDE) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77i 9577-ATG Intel 486DX4 100 MCA, 32-bit 5 4 one 2.88 MB 527 MB (IDE) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77i 9577-AUB Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 270 MB (IDE) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-BNB Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-BNG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-BTB Intel 486DX4 100 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-BTG Intel 486DX4 100 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-BUB Intel 486SX 33 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-xNB Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-xNG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-xTG Intel 486DX4 100 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop June 1994 [57]
77s 9577-6NB Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, Windows [57]
77s 9577-7NB Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 270 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, OS/2 [57]
77s 9577-6NG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, Windows [57]
77s 9577-7NG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, OS/2 [57]
77s 9577-6TG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, Windows, max. 256-KB L2 cache [57]
77s 9577-7TG Intel 486DX2 66 MCA, 32-bit 5 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB S3 928 optional Desktop November 1994 Multimedia, OS/2, max. 256-KB L2 cache [57]
90 XP 486 8590-0G5 Intel 486SX 20 MCA, 32-bit 4 4 one 1.44 MB 80 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0G9 Intel 486SX 20 MCA, 32-bit 4 4 one 1.44 MB 160 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0H5 Intel 486SX 25 MCA, 32-bit 4 4 one 1.44 MB 80 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0H9 Intel 486SX 25 MCA, 32-bit 4 4 one 1.44 MB 160 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0J5 Intel 486 25 MCA, 32-bit 4 4 one 1.44 MB 80 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0J9 Intel 80486DX 25 MCA, 32-bit 4 4 one 1.44 MB 160 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0K9 Intel 80486DX 33 MCA, 32-bit 4 4 one 1.44 MB 320 MB (SCSI) 8 MB 64 MB XGA optional Desktop October 1991 [54]
90 XP 486 8590-0KD Intel 80486DX 33 MCA, 32-bit 4 4 one 1.44 MB 320 MB (SCSI) 4 MB 64 MB XGA optional Desktop October 1990 [67]
90 XP 486 8590-0KF Intel 80486DX 33 MCA, 32-bit 4 4 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Desktop October 1991 [54]
90 XP 486 8590-0L9 Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 160 MB (SCSI) 8 MB 64 MB XGA optional Desktop April 1992 [68]
90 XP 486 8590-0LF Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Desktop April 1992 [68]
90 XP 486 9590-0LA Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 212 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 [69]
90 XP 486 9590-0LF Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 [69]
90 XP 486 9590-DLA Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 212 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 Windows 3.1 [69]
90 XP 486 9590-DLG Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 Windows 3.1 [69]
90 XP 486 9590-KLA Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 212 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 OS/2 [69]
90 XP 486 9590-KLG Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop March 1993 OS/2 [69]
90 XP 486 9590-QLA Intel 486DX2 50 MCA, 32-bit 4 4 one 2.88 MB 212 MB (SCSI) 8 MB 64 MB XGA-2 optional Desktop April 1993 OS/2 [22]
95 XP 486 8595-0G9 Intel 486SX 20 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 4 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0GF Intel 486SX 20 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 4 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0H9 Intel 486SX 25 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0HF Intel 486SX 25 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0J9 Intel 486 25 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0JD Intel 486 25 MCA, 32-bit 8 8 one 1.44 MB 320 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0JF Intel 486 25 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0KD Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 320 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0KF Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0LF Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA optional Tower October 1990 [70]
95 XP 486 8595-0M6 Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 104 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0M9 Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 160 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0MA Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 208 MB/212 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0MD Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 320 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0MF Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 400 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0MG Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 540 MB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 8595-0MT Intel 486DX2 50 MCA, 32-bit 8 7 one 1.44 MB 1 GB (SCSI) 16 MB 64 MB XGA optional Tower October 1990 [71]
95 XP 486 9595-0L6 Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 104 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0L9 Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0LA Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 208 MB/212 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0LD Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 320 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0LF Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0LG Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 540 MB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
95 XP 486 9595-0LT Intel 486DX2 50 MCA, 32-bit 8 8 one 1.44 MB 1 GB (SCSI) 8 MB 64 MB XGA-2 optional Tower October 1992 [72]
E 9533 IBM 486SLC2 50 ISA, 16-bit 4 (PC Card) 1 one 1.44 MB 350 MB/none (IDE) 4 MB 16 MB XGA-2 optional CRT/LCD Small form factor desktop July 1993

PS/2 Server

See also: Lenovo System x
IBM PS/2 Server models
Model IBM P/N Processor Clock speed
(MHz)		 Bus No. of
slots		 No. of
drive bays		 FDD HDD Stock
RAM		 Maximum
RAM		 Video adapter Monitor Form factor Date introduced Notes Ref(s).
Server 85 9585-0X6 Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 104 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0X9 Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 160 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0XA Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 208 MB/212 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0XD Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 320 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0XF Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0XG Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 540 MB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0XT Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 1 GB (SCSI) 8 MB 64 MB SVGA optional Tower September 1992 [73][74]
Server 85 9585-0KG Intel 486 33 MCA, 32-bit 8 7 one 2.88 MB 540 MB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [75][76][77]
Server 85 9585-0KT Intel 486 33 MCA, 32-bit 8 7 one 2.88 MB 1 GB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [75][76][77]
Server 85 9585-0NG Intel 486DX2 66 MCA, 32-bit 8 7 one 2.88 MB 540 MB (SCSI) 8 MB 256 MB SVGA optional Tower September 1993 [78][79][77]
Server 85 9585-0NT Intel 486DX2 66 MCA, 32-bit 8 7 one 2.88 MB 1 GB (SCSI) 8 MB 256 MB SVGA optional Tower September 1993 [78][79][77]
Server 85 9585-4Vx Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB SVGA optional Tower Un­known [22]
Server 85 9585-Z0x Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB SVGA optional Tower June 1994 [22]
Premium Server 85 9585-4Ux Intel 486SX 33 MCA, 32-bit 8 7 one 2.88 MB 400 MB (SCSI) 8 MB 64 MB SVGA optional Tower May 1993 [22]
Server 95 8595-0K6 Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 104 MB (SCSI) 8 MB 256 MB SVGA optional Tower Un­known [80]
Server 95 8595-0K9 Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 8 MB 256 MB SVGA optional Tower Un­known [80]
Server 95 8595-0KA Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 208 MB/212 MB (SCSI) 8 MB 256 MB SVGA optional Tower Un­known [80]
Server 95 8595-0KG Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 540 MB (SCSI) 8 MB 256 MB SVGA optional Tower Un­known [71]
Server 95 8595-0KT Intel 486 33 MCA, 32-bit 8 8 one 1.44 MB 1 GB (SCSI) 8 MB 256 MB SVGA optional Tower Un­known [71]
Server 95 8595-0L6 Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 104 MB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81][76]
Server 95 8595-0L9 Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81]
Server 95 8595-0LA Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 208 MB/212 MB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81][76]
Server 95 8595-0LD Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 320 MB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81][76]
Server 95 8595-0LG Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 540 MB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81][76]
Server 95 8595-0LT Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 1 GB (SCSI) 8 MB 256 MB SVGA optional Tower October 1992 [81][76]
Server 95 9595-0M6 Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 104 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0M9 Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 160 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0MA Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 208 MB/212 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0MD Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 320 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0MF Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 400 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0MG Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 540 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-0MT Intel 486 50 MCA, 32-bit 8 8 one 1.44 MB 1 GB (SCSI) 16 MB 256 MB SVGA optional Tower October 1992 [82][76]
Server 95 9595-1NG Intel 486DX2 66 MCA, 32-bit 8 7 one 1.44 MB 540 MB (SCSI) 16 MB 256 MB SVGA optional Tower October 1993 [83][6]
Server 95 9595-1NT Intel 486DX2 66 MCA, 32-bit 8 7 one 1.44 MB 1 GB (SCSI) 16 MB 256 MB SVGA optional Tower October 1993 [83][6]
Server 95 9595-1NV Intel 486DX2 66 MCA, 32-bit 8 7 one 1.44 MB 2 GB (SCSI) 16 MB 256 MB SVGA optional Tower 1994 [72][84]
Server 95 9595-0PT Intel Pentium 60 MCA, 32-bit 8 7 one 1.44 MB 540 MB (SCSI) 16 MB 256 MB SVGA optional Tower September 1993 [85][6]
Server 95 9595-0PV Intel Pentium 60 MCA, 32-bit 8 7 one 1.44 MB 1 GB (SCSI) 16 MB 256 MB SVGA optional Tower September 1993 [85][6]
Server 95 9595-0QG Intel Pentium 66 MCA, 32-bit 8 7 one 1.44 MB 540 MB (SCSI) 16 MB 256 MB SVGA optional Tower September 1993 [86][79]
Server 95 9595-0QT Intel Pentium 66 MCA, 32-bit 8 7 one 1.44 MB 1 GB (SCSI) 16 MB 256 MB SVGA optional Tower February 1994 [87]
Server 95 9595-0QV Intel Pentium 66 MCA, 32-bit 8 7 one 1.44 MB 1 GB (SCSI) 16 MB 256 MB SVGA optional Tower September 1993 [86][79]
Server 95 Array 9595-3NG Intel 486DX2 66 MCA, 32-bit 8 9 one 1.44 MB 3×540 MB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3NT Intel 486DX2 66 MCA, 32-bit 8 9 one 1.44 MB 3×1 GB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3NT Intel 486DX2 66 MCA, 32-bit 8 9 one 1.44 MB 3×1 GB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3PG Intel Pentium 60 MCA, 32-bit 8 9 one 1.44 MB 3×540 MB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3PT Intel Pentium 60 MCA, 32-bit 8 9 one 1.44 MB 3×1 GB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3QG Intel Pentium 66 MCA, 32-bit 8 9 one 1.44 MB 3×540 MB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Server 95 Array 9595-3QT Intel Pentium 66 MCA, 32-bit 8 9 one 1.44 MB 3×1 GB (SCSI) 8 MB 256 MB SVGA optional Tower November 1993 [72][6]
Premium Server 95 9595-Z0x Intel 486DX2
Intel Pentium 		66 MCA, 32-bit 8 7 one 2.88 MB 1 GB (SCSI) 8 MB 256 MB SVGA optional Tower December 1994 Pre-installed with IBM LAN Server or Novell NetWare [88]
Server 295 8600-001 Intel 486 33 MCA, 32-bit, dual 12 10 one 1.44 MB 400 MB/1 GB (SCSI) 32 MB 128 MB SVGA optional Tower June 1992 Supports up to 28 GB of hot-swappable hard drive storage, RAID-5 compatible, dual processor optional, accepts only IBM 400 MB or 1 GB disks [89][90][91]
Server 295 8600-002 Intel 486 50 MCA, 32-bit, dual 12 10 one 1.44 MB 400 MB/1 GB (SCSI) 32 MB 128 MB SVGA optional Tower June 1992 Supports up to 28 GB of hot-swappable hard drive storage, RAID-5 compatible, dual processor optional, accepts only IBM 400 MB or 1 GB disks [89][90][91]
Server 195 8600-003 2×Intel 486 50 MCA, 32-bit, dual 12 10 one 1.44 MB 400 MB/1 GB (SCSI) 32 MB 128 MB SVGA optional Tower April 1993 Supports up to 28 GB of hard drive storage, RAID-5 compatible, dual processor standard, accepts only IBM 400 MB or 1 GB disks [92][91]

Portables

See also: IBM PS/2 portable computers
IBM PS/2 portable models
Model IBM P/N Processor Clock speed
(MHz)		 Bus No. of
slots		 No. of
drive bays		 FDD HDD Stock
RAM		 Maximum
RAM		 Video adapter Monitor Form factor Date introduced Notes Ref(s).
P70 8573-031 Intel 386 16 MCA, 32-bit 2, 1-16bit

1- 32bit

0 one 1.44 MB 30 MB (ESDI) 2 MB 8 MB VGA Monochrome gas plasma Portable March 1990 Includes slot for optional i387 co-processor [93]
P70 8573-061 Intel 386 20 MCA, 32-bit 2 (one 16-bit, one 32-bit) 0 one 1.44 MB 60 MB (ESDI) 2 MB 8 MB VGA Monochrome gas plasma Portable May 1989 Includes slot for optional i387 co-processor [93]
P70 8573-121 Intel 386 20 MCA, 32-bit 2 (one 16-bit, one 32-bit) 0 one 1.44 MB 120 MB (ESDI) 2 MB 8 MB VGA Monochrome gas plasma Portable May 1989 Includes slot for optional i387 co-processor [93]
P75 8573-161 Intel 486 33 MCA, 32-bit 4 (two 16-bit, two 32-bit) 0 one 1.44 MB 160 MB (SCSI) 4 MB 16 MB VGA Monochrome gas plasma Portable November 1990 SCSI controller built into planar [93]
P75 8573-401 Intel 486 33 MCA, 32-bit 4 (two 16-bit, two 32-bit) 0 one 1.44 MB 400 MB (SCSI) 4 MB 16 MB VGA Monochrome gas plasma Portable November 1990 SCSI controller built into planar [93]
L40 SX 8543-A44 Intel 386SX 20 ISA, 16-bit 0 (1 with AT bus expansion port) 0 one 1.44 60 MB (IDE) 2 MB 18 MB VGA Monochrome LCD Laptop March 1991 [93][94]
N51SX 8551-033 Intel 386SX 16 Proprietary 2 (PC Card) Un­known one 1.44 40 MB (IDE) 2 MB 10 MB VGA Monochrome LCD Notebook Un­known
N51SLC 8551-025 IBM 386SLC 16 Proprietary 2 (PC Card) Un­known one 1.44 80 MB (IDE) 2 MB 10 MB VGA Monochrome LCD Notebook Un­known
N33SX 8533-A33 Intel 386SX 16 Proprietary 2 (PC Card) Un­known one 1.44 40 MB (IDE) Un­known Un­known Un­known Monochrome LCD Notebook Un­known
N33SX 8533-A35 Intel 386SX 16 Proprietary 2 (PC Card) Un­known one 1.44 80 MB (IDE) Un­known Un­known Un­known Monochrome LCD Notebook Un­known
CL57 SX 8554-045 IBM 386SLC 16 Proprietary 2 (PC Card) Un­known one 1.44 80 MB (IDE) 2 MB 16 MB VGA Color TFT Laptop Un­known
IBM PS/2-related systems
Name IBM P/N Processor Clock speed
(MHz)		 Bus No. of
slots		 No. of
drive bays		 FDD HDD Stock
RAM		 Maximum
RAM		 Video adapter Monitor Form factor Date introduced Notes Ref(s).
Academic System 6152-022 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 20 MB (ST-506) 2 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Academic System 6152-024 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 20 MB (ST-506) 4 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Academic System 6152-044 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 44 MB (ST-506) 4 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Academic System 6152-048 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 44 MB (ST-506) 8 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Academic System 6152-074 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 70 MB (ESDI) 4 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Academic System 6152-078 Intel 80286
ROMP 032 		10 (286) MCA, 16-bit 8 4 one 1.44 70 MB (ESDI) 8 MB 8 MB VGA optional Tower February 1988 ROMP processor on daughter card, cannot work in parallel with 286 [95][96][97]
Clinical Workstation 7690 Intel 8086 8 (0 w) ISA, 8-bit 4 0 one 1.44 MB none 640 KB 8 MB MCGA Monochrome LCD Mobile workstation September 1989 Purpose-built mobile workstation using the Model 25 system board and Model 30 firmware for the healthcare sector; pairs with the IBM 7496 Executive Workstation [98]
EduQuest Thirty 9603 IBM 386SLC 25 ISA, 16-bit 4 2 one 1.44 MB 30 MB (IDE) 1–4 MB 20 MB SVGA 14-in. color All-in-one March 1993 Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge [99][100][101]
EduQuest Forty 9604 Intel 486SX 25 ISA, 16-bit 4 2 one 1.44 MB 30 MB (IDE) 4 MB 20 MB SVGA 14-in. color All-in-one March 1993 Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge [99][100][101]
EduQuest Fifty 9605 Intel 486SX 25 ISA, 16-bit 4 2 one 1.44 MB 30 MB (IDE) 4 MB 20 MB SVGA 14-in. color All-in-one March 1993 Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge [99][100][101]
EduQuest Thirty-cs 9606 Cyrix Cx486SLC2 25/50 ISA, 16-bit 4 2 one 1.44 MB Un­known Un­known Un­known SVGA 14-in. color All-in-one 1994 Model 25 adapted specifically for educational institutions, optional sound card [102][103][101]
EduQuest Fifty-cs 9608 Intel 486DX2 33 ISA, 16-bit 4 2 one 1.44 MB Un­known Un­known Un­known SVGA 14-in. color All-in-one 1994 Model 25 adapted specifically for educational institutions, optional sound card [102][103][101]
EduQuest Thirty-five 9613 Cyrix Cx486SLC2 25/50 ISA, 16-bit 4 2 one 1.44 MB 133 MB/256 MB/342 MB (IDE) 4 MB Un­known SVGA 14-in. color All-in-one September 1994 Model 25 adapted specifically for educational institutions, optional sound card, late models without IBM logo on badge [104][101]
EduQuest Fifty-five 9615 Intel 486 33–100 ISA, 16-bit 4 2 one 1.44 MB 170 MB/360 MB/540 MB (IDE) 4 MB 64 MB SVGA 14-in. color All-in-one September 1994 Model 25 adapted specifically for educational institutions, optional sound card, six processor options offered [104][101]
EduQuest Forty-five 9614 Intel 486DX2 50 or 66 ISA, 16-bit 4 2 one 1.44 MB Un­known 4 MB Un­known SVGA 14-in. color All-in-one September 1995 Model 25 adapted specifically for educational institutions, optional sound card [105][101]
Executive Workstation 7496 Intel 8086 8 (0 w) ISA, 8-bit 3 0 one 720 KB none 640 KB 640 KB MCGA Monochrome All-in-one September 1989 Purpose-built all-in-one computer using the Model 30 system board for the healthcare sector; pairs with the IBM 7690 Clinical Workstation (image 1, 2) [106]
GE Fanuc Workmaster II 7186 Intel 386 16 MCA, 32-bit 0 0 one 1.44 MB 30 MB (ESDI) 2 MB 8 MB VGA Monochrome gas plasma Portable March 1990 General Electric Fanuc-branded ruggedized industrial PS/2 P70 in black plastic case [107]
Industrial Computer 7552-040 Intel 80286 10 ISA, 16-bit
MCA, 16-bit (undocumented) 		8 (modules, 7 fillable) 3 (as modules) none none 512 KB 3 MB EGA optional Benchtop or rack mount October 1986 Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987 [108][109][110][111]
Industrial Computer 7552-140 Intel 80286 10 ISA, 16-bit
MCA, 16-bit (undocumented) 		8 (modules, 7 fillable) 3 (as modules) one 1.44 MB (as a module) 20 MB (as a module, 40 MB as two identical modules; ST-506) 512 KB 3 MB VGA optional Benchtop or rack mount October 1986 Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987 [108][109][110][111]
Industrial Computer 7541 Intel 80286 10 MCA, 16-bit 3 3 one 1.44 MB 30 MB (ESDI) 1 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop March 1989 Desktop ruggedized industrial PS/2 [112][113]
Industrial Computer 7542 Intel 80286 10 MCA, 16-bit 4 3 one 1.44 MB 30 MB (ESDI) 1 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Rack mount March 1989 Rack-mounted ruggedized industrial PS/2 [112][113]
Industrial Computer 7561 Intel 386 20 MCA, 32-bit 3 4 one 1.44 MB 60 MB (ESDI) 2 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop March 1989 Desktop ruggedized industrial PS/2 [112][113]
Industrial Computer 7562 Intel 386 20 MCA, 32-bit 4 4 one 1.44 MB 60 MB (ESDI) 2 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Rack mount March 1989 Rack-mounted ruggedized industrial PS/2 [112][113]
Industrial Computer 7546 Intel 386SX 20 MCA, 16-bit 5 4 one 2.88 MB 320/400 MB (SCSI) 4 MB 16 MB VGA optional Benchtop or rack mount September 1991 Rack-mountable desktop ruggedized industrial PS/2 [114]
Industrial Computer 7568-040 Intel 386 25 MCA, 32-bit
ISA, 16-bit (with adapter interposer) 		8 (modules, 7 fillable) 3 (as modules) one 1.44 MB (as a module) none 4 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop or rack mount October 1989 Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2 [115][116]
Industrial Computer 7568-150 Intel 386 25 MCA, 32-bit
ISA, 16-bit (with adapter interposer) 		8 (modules, 6 fillable) 3 (as modules) one 1.44 MB (as a module) 120 MB (as a module, 240 MB as two identical modules; ESDI) 8 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop or rack mount October 1989 Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2 [115][116]
Industrial Computer 7568-C40 Intel 486 25 MCA, 32-bit
ISA, 16-bit (with adapter interposer) 		8 (modules, 7 fillable) 3 (as modules) one 1.44 MB (as a module) optional 8 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop or rack mount September 1991 Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2 [117][116]
Industrial Computer 7568-D40 Intel 486DX2 50 MCA, 32-bit
ISA, 16-bit (with adapter interposer) 		8 (modules, 7 fillable) 3 (as modules) one 1.44 MB (as a module) optional 8 MB 8 MB (on planar)
16 MB (with expansion card) 		VGA optional Benchtop or rack mount September 1991 Also known as "Gearbox 800", rack-mountable ruggedized modular industrial PS/2 [118][116]
Personal Typing System 6901-001 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. monochrome Desktop July 1987 Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Wheelwriter [119]
Personal Typing System 6901-002 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. monochrome Desktop July 1987 Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Quietwriter [119]
Personal Typing System 6901-003 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. color Desktop July 1987 Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Wheelwriter [119]
Personal Typing System 6901-004 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. color Desktop July 1987 Slightly modified application-specific Model 30 with word processing software, networking expansion card, and Quietwriter [119]
Personal Typing System 6901-005 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. monochrome Desktop July 1987 Slightly modified application-specific Model 30 with word processing software and networking expansion card [119]
Personal Typing System 6901-006 Intel 8086 8 (0 w) ISA, 8-bit 0 2 one 720 KB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA 12-in. color Desktop July 1987 Slightly modified application-specific Model 30 with word processing software and networking expansion card [119]
Personal Typing System/2 6907 Intel 8086 8 (0 w) ISA, 8-bit 2 2 one 1.44 MB (two optional) none (20 MB optional with single-floppy model; ST-506) 640 KB 640 KB MCGA optional Desktop July 1989 Slightly modified application-specific Model 30 with word processing software and networking expansion card, Wheelwriter optional [120][121]
Personal Typing System/2 286 6908 Intel 80286 10 (1 w) ISA, 16-bit 2 2 one 1.44 MB (two optional) none (20/30 MB optional with single-floppy model; ST-506/ESDI) 1 MB 1 MB VGA optional Desktop July 1989 Slightly modified application-specific Model 30 286 with word processing software and networking expansion card, Wheelwriter optional [120][121]

See also

References

  1. ^ a b c d e f g h i "IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0" (PDF). International Business Machines Corporation. September 1988. p. 44. Retrieved September 29, 2021 – via Bitsavers.
  2. ^ "Short Looks: IBM PS/2 Model 25". InfoWorld. 9 (33). CW Communications. August 17, 1987 – via Google Books.
  3. ^ Gibson, Stanley (November 9, 1987). "IBM banks on options for PS/2s". Computerworld. XXI (45). CW Communications: 24 – via Google Books.
  4. ^ Mardesich, Jodi (October 15, 1990). "IBM Joins Diskless Workstation Market with 386SX Machine". InfoWorld. 12 (42). CW Communications: 39 – via Google Books.
  5. ^ a b c d e f g "IBM PS/2 (Model 77) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  6. ^ a b c d e f g h i j k l Burns, Christine (September 20, 1993). "IBM Offers 7 New Servers". Network World. 10 (38). IDG Publications: 24, 27 – via Google Books.
  7. ^ a b "IBM PS/2 (Model 25) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  8. ^ a b c d "IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0" (PDF). International Business Machines Corporation. September 1988. p. 43. Retrieved September 29, 2021 – via Bitsavers.
  9. ^ a b c "IBM PS/2 (Model 25-286) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  10. ^ a b c Lunan, Charles (January 1992). "IBM Goes After School Computer Market". Sun Sentinel. Tribune Publishing Company. p. D3 – via ProQuest. On Tuesday, IBM released the first product developed by [Jose] Garcia's team: the Model 25 SX. The new model uses the same Intel 386SX microprocessor ... to run the graphics-rich software popular with teachers. It will be able to display up to 256 different colors and come standard with connections for overhead projection systems and computer networks. The new models will become available in April at $1,249 to $1,899, IBM said.
  11. ^ a b c Walsh, William (June 15, 2005). "IBM PS/2 Model 25SX". Walsh Computer Technology. Retrieved September 29, 2021.
  12. ^ Mueller, Scott (1994). Upgrading and Repairing PCs (4th ed.). Que. pp. 1120–1121. ISBN 9781565299320 – via the Internet Archive.
  13. ^ "IBM cuts prices on three PS/2s". Computer & Software News. 7 (15). Lebhar-Friedman, Inc.: 3 et seq April 10, 1989 – via Gale.
  14. ^ a b "IBM PS/2 (Model 30) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  15. ^ a b Gibson, Stanley (November 9, 1987). "IBM banks on options for PS/2s". Computerworld. XXI (45). CW Communications: 24 – via Google Books.
  16. ^ a b "IBM PS/2 (Model 30-286) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  17. ^ "IBM Personal System/2 Model 30 286 (8530-E31)". International Business Machines Corporation. September 26, 1989. Retrieved September 29, 2021.
  18. ^ "IBM Personal System/2 Model 30 286 (8530-E41)". International Business Machines Corporation. April 23, 1991. Retrieved September 29, 2021.
  19. ^ a b c d "IBM PS/2 (Model 35 SX/35 LS) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  20. ^ "IBM Sales Manual (US) – Document 5765-160: IBM AIX PS/2 Operating System v1.3". International Business Machines Corporation. September 21, 1992. Archived from the original on November 5, 2022.
  21. ^ a b "IBM PS/2 (Model 35 SLC) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  22. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af "List of IBM Vintage PCs". Mastodonic Personal Computers. July 29, 2002. Archived from the original on September 29, 2023.
  23. ^ Buckler, Grant (August 5, 1992). "IBM Canada cuts PS/2 prices". Newsbytes. The Washington Post Company – via Gale.
  24. ^ a b c "IBM PS/2 (Model 40 SX) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  25. ^ a b "IBM PS/2 (Model 40 SLC) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  26. ^ "IBM PS/2 (Model 50) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  27. ^ a b c d e f g Bowlds, Pat A. (1991). Micro Channel Architecture: Revolution in Personal Computing. Van Nostrand Reinhold. pp. 338–339. ISBN 9780442004330 – via Google Books.
  28. ^ a b "IBM PS/2 (Model 50 Z) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  29. ^ a b c d "IBM PS/2 (Model 55 SX/55 LS) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  30. ^ a b Mueller, Scott (1994). Upgrading and Repairing PCs (4th ed.). Que. pp. 1124–1125. ISBN 9781565299320 – via the Internet Archive.
  31. ^ a b Brennan, Laura (October 15, 1990). "By naming, pricing diskless PC, IBM bolsters LAN lineup". PC Week. 7 (41). Ziff-Davis: 10 – via Gale.
  32. ^ a b c d e "IBM PS/2 (Model 56 SX/56 LS) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  33. ^ a b "IBM intros its fastest 386SX systems to keep PS/2 ahead of the pack". EDGE. 3 (93). EDGE Publishing: 44. March 2, 1992 – via Gale.
  34. ^ a b c d "IBM PS/2 (Model 56 SLC/56 SLC LS) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  35. ^ a b "IBM PS/2 (Model 57 SX) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  36. ^ a b c "IBM PS/2 (Model 57 SLC) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  37. ^ a b c d e f g h i j Mueller, Scott (1994). Upgrading and Repairing PCs (4th ed.). Que. pp. 1126–1127. ISBN 9781565299320 – via the Internet Archive.
  38. ^ a b "IBM PS/2 (Model 60) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  39. ^ a b c d e f Halliday, Caroline M.; James A. Shields (1988). IBM PS/2: Technical Guide. Howard W. Sams. p. 26. ISBN 9780672226281 – via Google Books.
  40. ^ a b c d e f Scannell, Ed; Alice LaPlante (March 26, 1990). "IBM Unveils New PS/2s with Fast SCSI Storage". InfoWorld. 12 (13). IDG Publications: 1, 8 – via Google Books.
  41. ^ a b "IBM PS/2 (Model 65 SX) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  42. ^ Woods, Wendy (October 30, 1990). "IBM rolls out high-end PS/2s, low-memory OS/2 version". Newsbytes. The Washington Post Company – via Gale.
  43. ^ a b c d e f "IBM PS/2 (Model 70-Axx) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  44. ^ a b c Chartock, David S. (June 6, 1988). "You asked for them; IBM adds 2 PS/2 models". Computer & Software News. 6 (23). Lebhar-Friedman: 1 et seq – via Gale.
  45. ^ Brennan, Laura; Doug Chandler (November 14, 1988). "High-end PS/2 Model 70 delayed while IBM awaits FCC approval". PC Week. 5 (46). Ziff-Davis: 4 – via Gale.
  46. ^ Spiegelman, Lisa L. (December 12, 1988). "First wave of 25MHz '386s sweeps market". PC Week. 5 (50). Ziff-Davis: 57 et seq – via Gale.
  47. ^ a b "IBM PS/2 (Model 70 486) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  48. ^ a b Sexton, Tara (December 25, 1989). "IBM Model 70 486 enters race as the fastest PS/2—so far". PC Week. 6 (51). Ziff-Davis: 1 et seq – via Gale.
  49. ^ a b c "IBM PS/2 (Model 80) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  50. ^ a b c LaPlante, Alice (August 10, 1987). "New Model 80 Offers 314MB Disk". InfoWorld. 9 (32). IDB Publications: 1, 89 – via Google Books.
  51. ^ a b Pitta, Julie (February 8, 1988). "Deskpro powers up". Computerworld. XXII (6). IDG Publications: 33, 36 – via Google Books.
  52. ^ a b c "IBM Personal System/2 Model 80 (8580-081, 161 and A16) Announcement Letter". International Business Machines Corporation. October 30, 1990. Archived from the original on September 29, 2021. Retrieved September 29, 2021.
  53. ^ Pappas, Kim (November 3, 1987). "IBM ships 115M-byte version of PS/2 Model 80". PC Week. 4 (44). Ziff-Davis: 4 – via Gale.
  54. ^ a b c Mueller, Scott (1994). Upgrading and Repairing PCs (4th ed.). Que. pp. 1128–1129. ISBN 9781565299320 – via the Internet Archive.
  55. ^ Feil, Stuart (October 5, 1987). "Compaq adds new '386 PC arch". Electronic News. 33. Sage Publications: 15 et seq – via Gale.
  56. ^ a b c d "IBM PS/2 53 486SLC2 (9553-0B7 and 0BB), IBM PS/2 53LS 486SLC2 (9553-1BX and 2BX) Announcement Letter". International Business Machines Corporation. Archived from the original on September 11, 2014. Retrieved September 28, 2021 – via Kevin Bowling.
  57. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap Personal Systems Reference – IBM PS/2 1992 to 1995 – withdrawn (PDF). International Business Machines Corporation. May 1995.
  58. ^ a b "New PCs: new IBM PS/2s". EDGE. 3 (123). EDGE Publishing: 11. September 28, 1992 – via Gale.
  59. ^ a b "IBM PS/2 (Model 56 SLC2) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  60. ^ a b c d e f g Mueller, Scott (1994). Upgrading and Repairing PCs (4th ed.). Que. pp. 1208–1209. ISBN 9781565299320 – via the Internet Archive.
  61. ^ a b c d e Hoskins, Jim (1994). IBM Personal Systems. Wiley. p. 10. ISBN 9780471599302 – via the Internet Archive.
  62. ^ a b "9556 / 9557 Planar: SLC2, SLC3 & Ultimedia M57 SLC2". Ardent Tool. n.d. Archived from the original on June 9, 2023.
  63. ^ a b "IBM PS/2 56 and 57 486SLC2, PS/2 Ultimedia M57 and Ultimedia DV M57 486SLC2 Announcement Letter". International Business Machines Corporation. September 21, 1992. Archived from the original on September 28, 2021. Retrieved September 28, 2021.
  64. ^ a b "IBM PS/2 (Model 57 SLC2) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  65. ^ a b c d e f "IBM Hardware Export Classification Lookup Tool – Search Results – 466201–466250 of 468,275 results". International Business Machines Corporation. September 7, 2016. Archived from the original on October 21, 2023.
  66. ^ a b "IBM PS/2 (Model 76) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  67. ^ a b c d e f g "IBM PS/2 (Model 90 XP 486) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  68. ^ a b "IBM asks users to pay arm and a leg for new PS/2s". Computergram International. GlobalData. April 29, 1992 – via Gale.
  69. ^ a b c d e f "IBM PS/2 (Enhanced Model 90 XP 486) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  70. ^ a b c d e f g h i j "IBM PS/2 (Model 95 XP 486) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  71. ^ a b c d e f g h i "IBM PS/2 (Model 95 XP 486) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  72. ^ a b c d e f g h i j k l m n o "IBM PS/2 (Enhanced Model 95 XP 486)/PC Server 95 – Technical Specifications". International Business Machines Corporation. Archived from the original on September 12, 2014. Retrieved September 28, 2021 – via Kevin Bowling.
  73. ^ a b c d e f g "PS/2 Server 85 – Technical Specifications (9585-0X6, 0X9, 0XA, 0XD, 0XF, 0XG, 0XT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  74. ^ a b c d e f g Scannell, Ed (September 28, 1992). "Big Blue Relaunches PS/2s and Slashes Prices". InfoWorld. CW Communications. p. 12 – via Google Books.
  75. ^ a b "PS/2 Server 85 – Technical Specifications (9585-0KG, 0KT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  76. ^ a b c d e f g h i j k l m n Gillooly, Caryn (October 5, 1992). "IBM Fills Out Server Plan with Two New PS/2 Models". Network World. 9 (40). IDG Publications: 11 – via Google Books.
  77. ^ a b c d "IBM PS/2 (Server 85)/PC Server 85 – Technical Specifications". International Business Machines Corporation. January 13, 1999. Retrieved September 28, 2021 – via Kevin Bowling.
  78. ^ a b "PS/2 Server 85 – Technical Specifications (9585-0NG, 0NT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  79. ^ a b c d Corcoran, Cate (September 20, 1993). "Faster IBM Servers Due This Month". InfoWorld. CW Communications. p. 25 – via Google Books.
  80. ^ a b c "PS/2 Server 95 – Technical Specifications (8595-0K6, 0K9, 0KA, 0KD, 0KF, 0KG, 0KT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  81. ^ a b c d e f "PS/2 Server 95 – Technical Specifications (8595-0LF) – Technical Specifications". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  82. ^ a b c d e f g "PS/2 Server 95 – Technical Specifications (9595-0M6, 0M9, 0MA, 0MD, 0MF, 0MG, 0MT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  83. ^ a b "PS/2 Server 95 – Technical Specifications (9595-1NG, 1NT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  84. ^ International Business Machines Corporation (April 26, 1994). "IBM Net Select advertisement". PC Magazine. 13 (8). Ziff-Davis: 199.
  85. ^ a b "PS/2 Server 95 – Technical Specifications (9595-0PG, 0PT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  86. ^ a b "PS/2 Server 95 – Technical Specifications (9595-0QG, 0QT)". International Business Machines Corporation. 2000. Retrieved September 28, 2021 – via Ardent Tool.
  87. ^ Hoskins, Jim (1995). IBM Personal Computers: A Business Perspective. Wiley. pp. 12, 61. ISBN 9780471047957 – via Google Books.
  88. ^ "Announcement Summary – December 20, 1994". International Business Machines Corporation. December 20, 1994. Archived from the original on October 22, 2023.
  89. ^ a b "IBM PS/2 Server 195 (8600-003 Announcement Letter". Industrial Business Machines. April 6, 1993. Retrieved September 29, 2021 – via Ardent Tool.
  90. ^ a b Staff writers (December 21, 1992). "Product Evaluation: PS/2 Server 295". Computerworld. 26 (51). CW Communications: 31–32 – via Google Books.
  91. ^ a b c Slavotínek, Tomáš. "8600 IDC Boards: Intelligent Disk Controller". Retrieved October 3, 2021.
  92. ^ "IBM PS/2 Server 195 (8600-003 Announcement Letter". Industrial Business Machines. April 6, 1993. Retrieved September 29, 2021 – via Ardent Tool.
  93. ^ a b c d e f IBM Personal System/2 Facts and Features (PDF). Vol. G360-2832-08. International Business Machines Corporation. June 1991.
  94. ^ Brutman, Michael B. (August 16, 2020). "IBM Personal System/2 Laptop 40 SX (PS/2 L40SX) Notes". Brutman.com. Retrieved September 29, 2021.
  95. ^ a b c d e f Fisher, Sharon (February 8, 1988). "Workstation Merges PS/2, RT Technology". InfoWorld. 10 (6). CW Communications: 1, 81 – via Google Books.
  96. ^ a b c d e f IBM 6152 Academic System (PDF). Vol. G590-0200-00. International Business Machines Corporation. 1988.
  97. ^ a b c d e f Walsh, William (2007). "IBM 6152 Academic System". Walsh Computer Technology. Retrieved September 29, 2021.
  98. ^ "IBM 7690 Clinical Workstation". Ardent Tool. 2022. Archived from the original on May 25, 2022.
  99. ^ a b c Greaves, Tom (March 1993). "EduQuest aims high: building the ideal computer for schools". Electronic Learning. 12 (6). Scholastic Inc.: 26 – via Gale OneFile.
  100. ^ a b c Staff writer (March 1993). "EduQuest announces new line of computers for K-12". Electronic Learning. 12 (6). Scholastic Inc.: 25 – via Gale OneFile.
  101. ^ a b c d e f g h "9655001 – IBM EduQuest 14-inch Monitor". DirectMacro. Archived from the original on September 30, 2021. Retrieved September 30, 2021.
  102. ^ a b "Title unknown". THE Journal. Technological Horizons in Education. 1994 – via Google Books.
  103. ^ a b "IBM EduQuest". Ardent Tool. Retrieved September 29, 2021.
  104. ^ a b Shields, Jean (September 1994). "Back-to-school computers". Technology & Learning. 15 (1). Future US: 66 – via Gale OneFile.
  105. ^ Staff writer (September 1995). "What's new on the hardware front". Technology & Learning. 16 (1). Future US: 64 – via Gale OneFile.
  106. ^ "IBM 7496 Executive Workstation". Ardent Tool. 2022. Archived from the original on May 25, 2022.
  107. ^ Reeve, Alan (January 1991). "Integrating PLCs with networks". Control and Instrumentation. 23 (1). Centaur Communications: 35 – via Gale OneFile. GE Fanuc has also introduced the Workmaster II, an i386-based ruggedised PC designed to be used as a portable PLC programmer. Operating at 16 MHz, the unit gives short start-up times, rapid hard disk and memory access and quick system updates.
  108. ^ a b "IBM 7552 Industrial Computer Model 540 Announcement Letter". Industrial Business Machines. November 3, 1987. Retrieved September 29, 2021 – via Ardent Tool.
  109. ^ a b Kono, M. E. (December 1992). Surface Computer System Architecture for the Advanced Unmanned Search System (AUSS) (PDF). Naval Command, Control and Ocean Surveillance Center. p. 3 – via Ardent Tool.
  110. ^ a b Wallace, Bob (October 20, 1986). "IBM uncloaks industrial micro as network gateway". Network World. 3 (33). IDG Publications – via Google Books.
  111. ^ a b Cleaveland, Peter (April 21, 1987). "Low-cost, flexible microcomputers get jobs in factories". Instrumentation & Control Systems. 61 (5). Reed Business Information Enterprise: 31 – via Gale OneFile. IBM doesn't advertise the PS/2 as a factory-floor machine, yet the PS/2's backplane bus structure, Micro Channel, appeared in a factory-floor computer before the PS/2 itself came on the market. People who examined the IBM 7552 Gearbox, ostensibly a factory-hardened version of the AT, notice something odd about the unit's bus: It had more bus lines than could be accounted for by the AT bus. The extra lines turned out to be the 16-bit Micro Channel. Nobody at IBM said anything about it at the time, because PS/2 hadn't yet been introduced.
  112. ^ a b c d LaPlante, Alice (March 27, 1989). "IBM Announces Two Industrial MCA Computers". InfoWorld. 11 (13). CW Communications – via Google Books.
  113. ^ a b c d "IBM 7561 and 7562 Industrial Computers Announcement Letter". International Business Machines Corporation. March 21, 1989. Retrieved September 29, 2021.
  114. ^ "IBM 7546 Industrial Computers Announcement Letter". International Business Machines Corporation. September 4, 1991. Retrieved September 29, 2021.
  115. ^ a b "Gearbox Model 80 Announcement Letter". Industrial Business Machines. October 24, 1989. Retrieved September 29, 2021 – via Ardent Tool.
  116. ^ a b c d Slavotínek, Tomáš. "7568 Common Devices". Ardent Tool. Retrieved September 29, 2021.
  117. ^ "Gearbox Model 80 (7568-C40) Announcement Letter". Industrial Business Machines. September 4, 1991. Retrieved September 29, 2021 – via Ardent Tool.
  118. ^ "Gearbox Model 80 (7568-D40) Announcement Letter". Industrial Business Machines. September 15, 1992. Retrieved September 29, 2021 – via Ardent Tool.
  119. ^ a b c d e f "IBM Personal System/2 and IBM Personal Computer Product Reference, Version 4.0" (PDF). International Business Machines Corporation. September 1988. p. 46. Retrieved September 29, 2021 – via Bitsavers.
  120. ^ a b LaPlante, Alice (July 24, 1989). "IBM Reenters AT Market with Typing System Line". InfoWorld. 11 (30). CW Communications: 9 – via Google Books.
  121. ^ a b "The IBM Personal Printer Series II 2390 and 2391 Impact Printers Announcement Letter". International Business Machines Corporation. August 20, 1991. Retrieved September 29, 2021.