Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
iMac 27" Eind 2012-2013 RAM Uitbreiden - YouTube
NEMIX RAM 16GB Kit (2x8GB Upgrade) DDR3-1600 SODIMM PC3-12800 for Apple MacBook Pro Mid 2012 / iMac Late 2012 / iMac 2013, Late 2014, Mid 2015, Mac Mini Late 2012 at Amazon.com