So, a friend of mine and I both have mid 2010 i5 MacBook Pro's. We got different hard drives. He upgraded his drive before the first time he even turned on his Macbook to a 500gb hitachi he had from the stock 320. He is able to have a SATA 3.0 connection, while my same computer only gets a 1.5 negotiated link speed. Research has shown me that the drive in my system does support 3.0 interface. Can anyone shed light on this?