Ok, so I remember when Sandy Bridge came out there were problems and 2 ports (out of the 6) worked correctly. Now I don't fully understand this but correct me if I'm wrong. The ODD and HDD use the two working ports (so no problem there.) But if you were to use the other 4 ports it could cause the failure problem? So if I connect my External Hard Drive thru the USB for Time Machine does that use one of the bad SATA ports?