593-1353 922-9849 27 inch iMac Mid 2011 - A1312 - DisplayPort Power Cable NB-2919W
This is a replacement power cable for the DisplayPort for the 27-inch iMac released in Mid 2011.
Apple part number: 922-9849
922-9849 27 inch iMac Mid 2011 - A1312 - DisplayPort Power Cable 5931353