Replacement Part 661-5972 iMac 27" Power Supply 310W for APPLE Product Name iMac 27" A1312 2009 2010 2011 310W Power Supply Product Condition NEW OEM iMac Compatible Model iMac 27" A1312 2009 2010 2011 Compatible Power Supply Part No. 661-5310 614-0476 614-0446 661-5468 661-5972 614-0501 Compatible Power Supply Part No. 661-5310 614-0476 614-0446 661-5468 661-5972 614-0501 Compatible Model No MB952LL/A, MB953LL/A, MC510LL/A, MC511LL/A, MC813LL/A, MC814LL/A,