Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
Apple's new 'Assembled in USA' iMac a bear to upgrade, repair • The Register
Apple iMac 21.5" All-in-One Desktop Computer Core i5-4570R 2.7GHz 8GB RAM 250GB HDD Mac OS Mojave Late-2013 w/ Keyboard & Mouse
Teardown of New 4K 21.5-inch iMac Reveals Removable RAM and Modular CPU - MacRumors
Final Words - 21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
I got a FREE 2013 iMac 21.5 with internal upgrades including Samsung evo ssd and 16gigs of ram. Then used open legacy patcher to install Mac OS Venture 13.5 beta. : r/osx
Pre-Owned Apple iMac 21.5-inch Desktop "Core i5" 2.9 (Late 2013) 8GB Memory 1TB HDD ME087LL/A - Best Buy
iMac 21.5-inch Late 2013 – Full Tech Specs, Release Date, and Price
iMac Late 2013 21.5 SSD Upgrade - YouTube
iMac | 3.2 GHz Core i5 | 27 Inch | Late 2013 - Techable.com