Thanks for the reply. This MB uses the Del. key to enter the BIOS setup utility. Unfortunately there is no boot option for USB that I can find. It shows a ZIP/100 option, and a LS120 option, along with the usual HDD-0, HDD-1, HDD-2, HDD-3, Floppy, SCSI, ATA133RAID and LAN, but none of those worked. The ZIP/100 "smelled" like it may be the right choice, but I guess not. I don't know what LS120 is. The rest of the options I understand.