Not sure what that controller card is exactly, but it sounds like it may be too slow at 40MB/s. For a standard PCI slot, you could use an Ultra320 or Ultra160 controller, but given that standard PCI is 133 on paper and under 100 in real life, an Ultra2Wide (U2W) will do (plus the drive won't consistently break 100 anyways). I have some U2W cards lying around if you'd like. Two LSI 8951Us and an LSI 8953U. Let me know if you'd like to buy one. Don't forget you'll need a cable and terminator.