Opened up 2012 21.5 iMac for SSD upgrade. | MacRumors Forums
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
Apple iMac 2.7Ghz i5 21.5-Inch (Late-2012) *Cracked Display, Damaged A – MSU Surplus Store
iMac Intel 21.5" EMC 2544 (Late 2012) Memory Maxxer RAM Upgrade Kit
Apple iMac 21.5-Inch "Core i5" 2.9GHz (Late 2012) MD094LL/A A1418 – Coretek Computers
Install memory in an iMac - Apple Support
Restored Apple iMac 21.5" All-in-One Computer, Intel Core i5, 8GB RAM, 1TB HD, macOS 10.15 Catalina, Silver, MD093LL/A (Refurbished) - Walmart.com
Review: Apple iMac 21.5in late 2012 • The Register
iFixit iMac teardown reveals dual mics, difficult RAM upgrades and glued LCD - 9to5Mac
iMac Intel 21.5" EMC 2544 RAM Replacement - iFixit Repair Guide
Install memory in an iMac - Apple Support
Restored Apple iMac 21.5" All-in-One Computer, Intel Core i5, 8GB RAM, 1TB HD, macOS 10.15 Catalina, Silver, MD093LL/A (Refurbished) - Walmart.com
2012 21.5-Inch Apple iMac Review: Slim, Sleek, And Stylish, But Far From Shallow | TechCrunch
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Install memory in an iMac - Apple Support
Amazon.com: iFixit SSD Upgrade Kit Compatible with iMac Intel 21.5" (Late 2012-2019) - 500 GB : Electronics
Apple iMac Late 2012 21.5-inch 2.7 GHz Core i5 Desktop DDR3 RAM Memory | Kingston
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
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
iMac | 2.9 GHz Intel i5 | 21.5 Inch | Late 2012 - Techable.com
Apple 21.5" Pre-Owned iMac Desktop Intel Core i5 2.7GHz 8GB Memory 1TB HDD (2012) Silver MD093LL/A - Best Buy
The Case of the Late-2012 iMacs - MacStories
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
27" iMac (Late 2012) 32GB RAM Upgrade (How To & Guide) - YouTube
iMac RAM Memory Installation 2009 2010 2011 21 5" Apple Dollars #13 - YouTube
