661-5596 Logic Board 3.6 GHz for iMac 21.45 inch Mid 2010 A1311 MC508LL/A (820-2784-A) Published July 19, 2017 at 350 × 350 in 661-5596 Logic Board 3.6 GHz for iMac 21.45 inch Mid 2010 A1311 MC508LL/A (820-2784-A)