I have been sitting on a box of ZIP100 disks from the late 90s, and I finally invested in this drive. I had low expectations, especially given the spotty reviews, but I plugged it into my laptop running Windows 7, followed an approximation of the instructions in the booklet (wow does the CD-ROM look old!
https://www.amazon.com/Iomega-100MB-USB-Powered-Drive-Zip/dp/B00005U7RB