Zip was a high-capacity floppy disk format originally introduced in 1995 by Iomega. Initially, it had a capacity of 100 MB, later increased to 250 MB in 2001, and again to 750 MB in 2002.
The new Zip 750 drives were available in various interfaces; USB 2.0 and FireWire for exernal drives and IDE for internal drives.
Although the disks looked identical to Zip 100 and Zip 250 disks, they could not be used in smaller capacity drives and are automatically ejected. However, Zip 100 discs could be read in Zip 750 drives, and Zip 250 disks can be both read and written to, so users with existing Zip disks could continue to use them. The introduction of the Zip 750 meant that Zip disks had a higher capacity than the competing CD-R or CD-RW disks. However, the cost of Zip 750 disks was much higher than CD-R or CD-RW media, and by the time of its introduction, many PCs had CD burners installed.
The Zip 750 was short-lived as all Zip versions were discontinued in 2003.
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