Power Supply Charge Board for 21.5" iMac A1311 205W Input: 100-240VAC; 50/60Hz; 4A Output: +12+12.1 VM DC/ 5 A; 12+12.1VS DC/ 17.1A; 205W Compatible: 21.5" iMac A1311 (Late 2009, 2010,-Late 2011) iMac12,1 Mid 2011 (MC309LL/A, MC812LL/A) & Late 2011 (MC978LL/A)iMac10,1 Late 2009 (MB950LL/A) & iMac11,2 Mid 2010 (MC508LL/A, MC509LL/A) Compatibility: iMac 21.5' A1311 - iMac10,1 Late 2009: MB950LL/A (3.06 GHz Core 2 Duo) - iMac10,1 Late 2009: MB950LL/A (3.33 GHz Core 2 Duo) - iMac11,2 Mid 2010: MC508LL/A (3.06 GHz Core i3) - iMac11,2 Mid 2010: MC509LL/A (3.2 GHz Core i3) - iMac11,2 Mid 2010: MC509LL/A (3.6 GHz Core i5) - iMac12,1 Mid 2011: MC309LL/A (2.5 GHz Core i5) - iMac12,1 Mid 2011: MC812LL/A (2.7 GHz Core i7) - iMac12,1 Mid 2011: MC812LL/A (2.8 GHz Core i7) - iMac12,1 Late 2011: MC978LL/A (3.1 GHz Core i3) P/N: 614-0444, 614-0445 661-5299 ADP-200DFB,