I just purchased a late 2011 15" MBP and got a 128GB Crucial M4 SSD to put in it. I discovered after attempting to put the SSD in the Optibay that it has a design flaw preventing the SATA 3.0 SSD from working in the Optibay. Has anyone had any luck in moving their SATA 3.0 main HDD to the Optibay and installing the SSD in the main drive bay or am I only going to be able to get a SATA 2.0 drive to work in the Optibay? Thanks for your help!