Hi Damir, I am running an external SCSI Zip on a NCR 53c810-Controller, using the 53c8xx-driver, too. I have NEVER experienced or heard about any problems with this setup - my to disks, DAT tape and CD-Rom are quite happy. I don't know what a Zipzoom adaptor is - so I cannot comment on that. So long, Stephan -- Stephan Engelke engelke@math.uni-hamburg.de *** Coffee not found: Operator halted ***