The EZ 135 Drive is a 3.5" removable-platter hard disk drive. It was introduced by SyQuest Technology in 1995. It had a maximum capacity of 135 MB per disk.^[1][2]

A successor drive, known as the SyQuest EZFlyer, was released in 1996. It was backwards compatible with the EZ 135 disks, and could utilize a higher capacity 230 MB disk.^[3]

• Capacity: 135 MB
• Average seek time: 13.5 ms
• Burst transfer rate: 4 MB/s
• Buffer size: 64K
• Mechanism rated for 200,000 hours

The EZ 135 drive was available with several interfaces. The external drive was available with parallel or SCSI interfaces; the internal drive was available with IDE or SCSI interfaces.

At introduction, the EZ 135 Drive had the following prices (in US dollars):

• 135 MB cartridge: $20.00
• EZ 135 Drive – external SCSI: $240.00
• EZ 135 Drive – internal IDE: $200.00

The EZ 135 Drive was designed to be a competitor to the Iomega Zip drive and LS-120 SuperFloppy. The original box listed several advantages:

• Much faster
• Higher capacity
• 2-year warranty

Additionally the removable hard disk cartridges included a 5-year warranty.

Unfortunately, the EZ 135 drive was not backwards compatible with other SyQuest drives, and the original capacity was never increased beyond 135 MB. The Zip drive became popular and SyQuest's sales declined.

• SyQuest Technology
• Zip drive
• Jaz drive
• Orb Drive

Wikimedia Commons has media related to SyQuest EZ 135.

• SYQT homepage
• Zip drive vs. EZ 135, MIT, archived from the original (plain text) on 2007-03-11.
• SyQuest EZFlyer Information
• "EZFlyer Disk", Encyclopedia (definition), PC Mag.