Part Number: BCM92046MD. Compatible Model: Apple iMac 21.5" A1311, 27" A1312. iMac 27" A1312. iMac 21.5" A1311. We stand behind our product 100%! iMac11,3 Mid 2010: MC511LL/A (2.93 GHz Core i7). iMac11,3 Mid 2010: MC511LL/A (3.6 GHz Core i5).
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