
1) Floppy disk backup device 2) Obsolescent storage device 3) Old-style data storage device 4) Portable backup device
Found on
https://www.crosswordclues.com/clue/zip-drive

The Zip drive is a medium-capacity removable floppy disk storage system that was introduced by Iomega in late 1994. Originally, Zip disks launched with capacities of 100 MB, but later versions increased this to first 250 MB and then 750 MB. The format became the most popular of the superfloppy products which filled a niche in the late 1990s portab...
Found on
http://en.wikipedia.org/wiki/Zip_drive

(Digital cameras and photo printers) A device that allows the storage of up to 750 MB of data.
Found on
http://www.encyclo.co.uk/local/20472

A high-density removable-media drive. Each diskette holds either 100 or 250 megabytes.
Found on
http://www.encyclo.co.uk/local/20581

In computing, portable disk drive manufactured by or under license from Iomega. Zip drives can store 100 megabytes (MB) or 250 MB on each disk
Found on
https://www.encyclo.co.uk/local/21221
No exact match found.