Track down a number of hardware problems using the Iomega Z100S2 Troubleshooting Guide.
Identification and Background
The Iomega Z100S2 accepts 100MB zip drives and requires an external power supply. This series zip drive is compatible with ATAPI, SCSI, LTP, and USB interfaces. Iomega does not currently manufacture/sell the Z100S2, however there are some available from third-party sources.