922-9812 DisplayPort Power Cable - 21.5inch Mid 2011, Late 2011 - A1311 iMac NB-3112W
This is a replacement power cable for the DisplayPort for the 21.5-inch iMac released in Mid 2011.
Apple part number: 922-9812
922-9812 DisplayPort Power Cable - 21.5inch Mid 2011, Late 2011 - A1311 iMac