I don't have an A4000T, but have an A4091 which is basicly the same SCSI card. AFAIK, there's no way to disable individual devices (like you can in the CSMK3/CSPPC bios). Double check the jumpers on the back of the card and verify that 1) Long spinup is disabled (SW5 off), 2) External termination is enabled (SW7 off), and 3) Multiple LUNs are disabled (SW8 off)
