Compatible SubfamilyA1297 Macbook Pro Uni/Early 2009 2.66GHz/2.93GHz, Uni/Mid-2009 2.8GHz/3.06GHzUni/Mid-2010  i5 2.53GHz/ i7 2.66GHz/ i72.8GHz Uni/Early 2011 i7 2.2GHz/ i7 2.3GHz Uni/Late-2011 i7 2.4GHz/ i7 2.5GHz