Mike, The BIOS probably is handling IRQ->PCI slot mapping automatically, which is nice, but you may have to reserve the IRQ (10) by handling the mapping manually. You might get by easy though if you insert the SCSI card and tell the BIOS to reallocate the IRQs/redo the mapping, but this is pretty maniboard/BIOS dependent stuff. Share the BIOS menu details if you get stuck or find something confusing, and good luck to you. Troy >>> mikeflaherty at mn.rr.com 02/02/02 01:19AM >>> >But how will I resolve the IRQ allocation problem ?