Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Which RAM to buy for iMac 27-inch Late 2012? | MacRumors Forums
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Apple iMac 27'' Core i5 2.9GHz 8GB, A1419 Late 2012 - DISCOUNT ELECTRONICS
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
Apple iMac 13,1 A1418 2012 Intel Core i5 3330S 2.70GHZ 8GB RAM NO Screen/HDD/OS | eBay
How To Upgrade RAM in a Mac | Macworld
iMac RAM for Model 13.2 to 15.1| DDR3-1600MHz | 8GBx4 | MacMemory.com
A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com