ok I have A 320 gig hard drive that came with the MBP 13. and it is full what is the largest size it will take 500 or larger? Also what is the easiest way to get my stuff moved to the new drive I just bought this hard drive clone dock guess all I need to do is remove the drive plug it in the A slot and the new one in the B dock and hit the button to clone has anyone used one of these before and do they work fear it might wreck my original drive . Is there a way to plug the new drive on the dock and use the usb cord to clone directly from the machine to the dock?