Ok well so what happens is the motherboard freezes when I turn it on its an American megatrends motherboard I have 4 sata ports all work as it picks up the sata hdd with no problem. Just some what freezes I press F8 to enter the bios and it says its loading but don't. Now I don't have any O.S. on it cause it wouldnt load. For me to install it I connected it to a different computer and it loaded fine opened the hdd because I had the hdd working before and or had old games on it. So I did a full format think this would work but still freezes on the other motherboard. And the cable works fine.