The difference between 40 and 80 way cables is what "ATA" rating they can use, ATA66 is the max for a 40 way; or so I have read. Your hard drives should have an 80 way connector to achieve maximum performance. The ROMs on the other hand are only ATA33, so they will run just fine on the 40pin. Ultimately you may see a decrease in performance using the 40 way cables with your HDD. My advice would be to replace both your cables with 80 way connectors and get your hands on some god quality ones to avoid ripping them apart; your a brute arent you lol. -Michael:)

I never intended to make art.