Late 2013 iMac updated to Sonoma - runs absolutely fine. : r/OpenCoreLegacyPatcher
Apple 21-inch iMac, late 2013 review | TechRadar
How to Upgrade Memory in a 27-inch iMac (Late 2012-2013) iMac13,2 and iMac14,2 - YouTube
How to Upgrade RAM on iMac - A Performance Uprade - devonbuy.com
iMac Intel 21.5" EMC 2638 RAM Replacement - iFixit Repair Guide
21.5 inch late 2013 iMac - RAM upgrade - Apple Community
How to Upgrade the iMac 21.5-inch (2013-2014)
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
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 2013 (Late) 21.5-inch (iMac 14,3) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
Install memory in an iMac - Apple Support
2013 iMac teardowns reveal SSD slots, soldered-in CPU in the 21.5” model | Ars Technica
Apple 21.5" Late 2013 iMac Logic Board | 3.1GHz Intel i7 w/16GB RAM 661-7504 nc | eBay
Apple iMac 21.5" Core i5-4570R 2.70 GHz, 8GB RAM, 1TB HDD, 10.15.6 Lat – PC Retro Shop
A-Tech 8GB Kit (2x4GB) 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 21.5" iMac Desktop Computer (Late 2013) ME086LL/A B&H
iMac Intel 21.5" EMC 2638 RAM Replacement - iFixit Repair Guide
Install memory in an iMac - Apple Support
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
