Apple Computer , iMac 20-inch 2.66 GHz Core 2 Duo (E8135), iMac 21.5-inch 2.5/2.7 GHz Core i5 (i5-2400S, i5-2500S), iMac 21.5-inch 2.8 GHz Core I7 (i7-2600S), Order Number, MC978LL/A, MC309LL/A, MC812LL/A, BTO/CTO, Model Number, A1311, Part Name, Power DC Cable, Manufacture Part Number, 593-1286, EMC Number, EMC 2496, EMC 2428, EEE Code, N/A, Compatible Apple Computer, iMac (21.5-inch, Late 2011), iMac (21.5-inch, Mid 2011), ,
Order you product here: 922-9798 Power DC Cable for iMac 21.5 inch 2011 A1311 MC978LL/A, MC309LL/A, MC812LL/A, BTO/CTO (593-1286), 922-9798
source http://info.applepartsellers.com/922-9798-power-dc-cable-for-imac-21-5-inch-2011-a1311-mc978ll-a-mc309ll-a-mc812ll-a-bto-cto-593-1286