Convert SCSI to USB??
If you find one with a PCI slot (not PCI express) then you can get a high quality, used, adaptec SCSI adapter for under $20 on ebay. It looks like it has drivers all the way back to Win ME/2000, so you shouldn't need much.
Right-- I salvaged the SCSI card from the defunct computer. I also think I still have the drives I downloaded but good to know Epson still keeps them online. Not surprising as I expect there's many folks out there still using equipment this old and older. Especially the higher end gear.