I've also got a similar question: I've got an HP 36GB 15K U320 80 pin drive and an HP 146GB 10K U320 80 Pin Drive in my possession right now. The card I've got is an adaptec SCSI II card. Don't think it is U160 even, but it has a 68 pin port on it. Anyway, I cannot get the drives to even spin up in my test rig using one of those adapters. The cards BIOS options are set to send a signal to spin drives, but nothing happens. There is a Green LED on the Drives that comes on when the power button is pressed, but nothing happens past that. Is my SCSI card just too old?