Apple Computer , iMac 21.5-inch 2.7/2.9 Core i5 (i5-3335S, i5-3470S), iMac 21.5-inch 3.1 GHz Core i7 (i7-3770S), Order Number, MD093LL/A, MD094LL/A, BTO/CTO, ME699LL/A, Model Number, A1418, Model Year, Late 2012, Early 2013, Part Name, Vesa Mount Bracket, Manufacture Part Number, N/A, EMC Number, EMC 2544, EMC 2545, EEE Code, N/A, Compatible Apple Computer, iMac (21.5-inch, Late 2012), iMac (21.5-inch, Early 2013), ,
Order you product here: 923-0421 Vesa Mount Bracket for iMac 21.5-inch Late 2012-Early 2013 A1418 MD093LL/A, MD094LL/A, ME699LL/A, 922-9157
source http://info.applepartsellers.com/923-0421-vesa-mount-bracket-for-imac-21-5-inch-late-2012-early-2013-a1418-md093ll-a-md094ll-a-me699ll-a