Macbook pro 2012,
Verified Purchase(What is this?)
This review is from: Bipra 9.5mm SATA to SATA Second Hard Drive or SSD Bay Caddy for Laptops, MacBook and MacBook Pro (Accessory)
Worked perfectly, I have done this before and have to say that his model is much better constructed than the competition.
It also has side screws to mount to the HDD, better than the flimsy plastic holder on other models, however, could be a pain if you regularly exchange the 2nd HDD