Apple Computer , iMac 21.5-inch 3.1 GHz Core i3 (I3-2100), Order Number, MC978LL/A, Model Number, A1311, Model Year, Late 2011, Part Name, Video Card 256MB AMD Radeon HD 6750M, Manufacture Part Number, N/A, Compatible Apple Order Number, MC309LL/A, MC812LL/A, MC978LL/A, Compatible Apple Model Number, A1311, EMC Number, EMC 2496, EEE Code, DMV6, DMV7, Compatible Apple Computer, iMac (21.5-inch, Late 2011), iMac (21.5-inch, Mid 2011), , Order you product here: 661-6023 Graphic Card 256MB AMD Radeon HD 6750M for iMac 21.5 inch Late 2011 A1311 MC309LL/A, MC812LL/A, MC978LL/A, 661-6023
source http://info.applepartsellers.com/661-6023-graphic-card-256mb-amd-radeon-hd-6750m-for-imac-21-5-inch-late-2011-a1311-mc309ll-a-mc812ll-a-mc978ll-a
