Worked perfectly for my needs, installed in a 2012 13" MacBook Pro (non-Retina) and everything worked perfectly, SSD installed in the case (2012 MBP has SATA 3 6Gbps in the optical bay ) and it's FAST, my only issues are with the DVD case as it does its job, I just wish it was made out of slightly better materials, an aluminum case would be great, also I don't see why USB 3 couldn't connect an optical drive via a usb, but that would help, but overall I'm very satisfied.
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