This is for the Mid 2009 model. Part Number(s): 661-5229, 661-5557, A1322 Compatible Model(s): MacBook Pro 13.3" 2.26GHz Core 2 Duo (MB990LL/A, A1278, MacBookPro5,5) - Mid 2009 MacBook Pro 13.3" 2.53GHz Core 2 Duo (MB991LL/A, A1278, MacBookPro5,5) - Mid 2009 MacBook Pro 13.3" 2.4GHz Core 2 Duo (MC374LL/A, A1278, MacBookPro7,1) - Mid 2010 MacBook Pro 13.3" 2.66GHz Core 2 Duo (MC375LL/A, A1278, MacBookPro7,1) - Mid 2010