Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
Harder, better, faster, stronger: A review of the 27-inch iMac | Ars Technica
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Can you upgrade the RAM in the 27-inch iMac? | iMore
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
How to Upgrade RAM on MacBook Pro, iMac & More | AVG
Teardown of New 21.5-inch iMac Reveals Glued Down LCD and Dual Microphones - MacRumors
iMac Retina 5K: Memory upgrade (RAM)
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
Upgrading RAM On The New 27-inch iMac Is Easy, Here's How | Cult of Mac
What Does It Take To Upgrade a 2012 iMac 21.5"?
OWC 8GB (2 x 4GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S08S) at Amazon.com
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM: 2012-2022: EveryMac.com
How To Upgrade RAM on the Apple iMac 2012 - 2013 RAM Upgrade - 21.5 inch model - YouTube
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
iMac Intel 21.5" EMC 2544 Repair - iFixit
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com