I have a 486 that I use this drive on. I am so surprised at the speed that it reads the info through the parallel port. I had heard that the parallel port could be slow with a ZIP drive, but it seems to work about the same  speed as an ATAPI drive I had preinstalled on my PII 400Mhz. The price is  right for ZIP drives. Don't bother with the 250 MB drive - disks are more  and not enough people have the drives yet that support them.