Hi, I recently decided I needed a bit more space, so got myself an optibay and installed a 256GB Crucial M4 (after putting one in the mrs Blackbook). Foolishly it seems however, as I didn't do my research and I seem to be suffering from the odd stuttering and random beach ball accessing data on the drive in the optibay. I checked the firmware and I'm running 000F (apparently not ideal) however looking in system info, I see my Apple SSD in the main bay (CTO option) saying : Link Speed: 6 Gigabit Negotiated Link Speed: 3 Gigabit The crucial M4 however, says : Link Speed: 6 Gigabit Negotiated Link Speed: 6 Gigabit Now I thought the early 2011 MBP's like mine (MacBookPro8,2) only had 3Gbps SATA ports in optical bay, yet mine says it negotiated 6Gbps - or is that the issue? It thinks it's negotiated at 6Gbps but really it's 3? And why is the Apple SSD not 6Gbps? Quick xBench says the Apple SSD is indeed slower by a substantial margin in the random read/write, which I completely didn't expect (631.99 for the Apple vs 1218 for the M4). Anyone any ideas??