I bought this for HT use, serving video. I planned on adding a large hdd but only 2 of the 4 sata ports work! I should have suspected something when i saw that the installed hdd and dvdrw drives were plugged into sata 3 and sata 2 ports respectively, not sata 0 and sata 1. No professional builder or mfgr does that, unless they KNOW that sata 0 and 1 are bad. In other words, the refurbers should have scrapped the *defective mobo* instead of hiding the flaws by just using sata 2 and 3 and saying nothing. THEY KNEW it was defective and shipped it anyway.  I've got a pcie to sata adapter card coming to overcome this at my expense, so it will work out. But I'd suggest a different pc and particularly a different seller. Caveat emptor