Jesus, some of you guys need to chill out. All the OP did was say that he tried a 12.5mm drive in a few different macbooks, and they fit. You know most people are not going to just make that up and say that it fits for no reason. If you don't want to believe him that's fine, but don't bash him unless YOU have PERSONALLY tried it for yourself, and it DID NOT work. If you have information to dispute what he is posting, by all means post it. However, don't bash him because a "Higher Publication" hasn't posted the same information.