Apple iMac 21.5-inch 2.8GHz Quad-core i7 (Mid 2011) MC812LL/A-BTO | mac of all trades
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Timetec 8GB Compatible for Apple DDR3L 1600MHz PC3L-12800 for Mac Book Pro (Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com