I found a viable OCW Data Doubler alternative in the Fenvi caddy but have some questions I hope that can be answered. Did you get the 9.5mm or the 12.7mm model? Is it true that SATA speeds becomes limited to 3Gb/s instead of 6Gb/s? I will be installing this in a late 2011 13-inch Macbook Pro. My 1TB drive is 12.5mm in height so the 12.7mm may be what I will get if SATA drops to 3Gb/s.