I have looked everywhere for any info and can not find a thing. I contacted Western Digital but they said contact ASRock support. So I did, and still coming up empty handed. I only have a 80GB hard-drive in right now, and it's at it's max. So what I wanted to do was keep that one, but also throw in a 120GB and maybe another bigger one. But how do I know which hard drives I can get for my system? I'm sooo lost, any help would be very appreciated. Thanks