Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Apple iMac 21.5" - 8GB RAM - 250GB - macOS X - a1311 3.2 GHZ UPGRADED 603784376509 | eBay
Apple iMac (Late 2012) review (21.5- and 27-inch) | Macworld
iMac 21.5-inch Late 2012 – Full Tech Specs, Release Date, and Price
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
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