The Zip drive is a data storage device. The company Iomega published it in late 1994.
Higher capacity Zip disks must be used in a drive with at least the same capacity ability. Generally, higher capacity drives also handle all lower capacity media. However, it is slower to write data on a 100 MB disk with a 250 MB Zip drive than with a 100 MB Zip drive.
Zip disks are thicker than 3.5" (9 cm) floppy disks. Nevertheless, zip disks are quite similar in appearance to regular floppy disks. This means the Zip drive slot is large enough to accept such a floppy disk.