I use this RAM in my 13 "MacBook Pro mid 2012 which I as now insets single computer and thus desktop replacement. In order to facilitate the MacBook this task a little, I have the Core now i7 a RAM-doubling of the hand given so he gets a little more air. Mac OS is now running even more perfomanter, the more one RAM in provides. The store itself was built quickly, has survived several test runs without any problems and can now stay where he is. At the heart of my MacBooks where He gives me joy.