Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Install memory in an iMac - Apple Support
Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Max Memory Upgrade at Amazon.com
Reemplazo del la RAM EMC 2428 en tu iMac Intel 21.5" - Guía de reparación iFixit
Can you upgrade the RAM in the 27-inch iMac? | iMore
Apple iMac Late 2012 27-inch 2.9GHz Core i5 Desktop DDR3 RAM Memory | Kingston
Install memory in an iMac - Apple Support
How To Upgrade RAM on the Apple iMac 2012 - 2013 RAM Upgrade - 21.5 inch model - YouTube
Upgrade your iMac's RAM in less than 5 minutes - 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
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)