This is the Backlight Board for the Intel iMac 27". Part Number(s): 661-5311, V267-604 Compatible Model(s): iMac 27" 3.06GHz Core 2 Duo (MB952LL/A, A1312, iMac10,1) - Late 2009 iMac 27" 2.66GHz Core i5 (MB953LL/A, A1312, iMac10,1) - Late 2009 iMac 27" 2.8GHz Core i7 (MB953LL/A, A1312, iMac10,1) - Late 2009 iMac 27" 3.33GHz Core 2 Duo (MB952LL/A, A1312, iMac10,1) - Late 2009