Compatible Model: MacBook Pro 13" A1278 2009 2010 2011 2012 Compatible Subfamily: MacBook Pro Unibody A1278 MacBook Pro 5,5 Mid 2009: MB990(2.26 GHz Core 2 Duo) MacBook Pro 5,5 Mid 2009: MB991(2.53 GHz Core 2 Duo) MacBook Pro 7,1 Mid 2010: MC374(2.4 GHz Core 2 Duo) MacBook Pro 7,1 Mid 2010: MC375(2.66 GHz Core 2 Duo) MacBook Pro 8,1 Early 2011: MC700(2.3 GHz Core i5) MacBook Pro 8,1 Early 2011: MC724(2.7 GHz Core i7) MacBook Pro 8,1 Late 2011: MD313(2.4 GHz Core i5) MacBook Pro 8,1 Late 2011: MD314(2.8 GHz Core i7) MacBook Pro 9,2 Mid 2012: MD101(2.5 GHz Core i5) MacBook Pro 9,2 Mid 2012: MD102(2.9 GHz Core i7) Compatible Model #: MB990, MC374, MB991, MC375, MC700, MC724, MD313, MD314, MD101, MD101, MD102