Adamanta 4GB (1x4GB) Apple Memory Upgrade for Late 2013 iMac 21.5" and 27" DDR3L 1600Mhz PC3-12800 SODIMM 2Rx8 CL11 1.35v RAM at Amazon.com
iMac Late 2013 Upgrade in 2020 CPU Ssd Ram MAX Out ... Worth it? | Shades Of Tech ⬡ - YouTube
Teardown of New 4K 21.5-inch iMac Reveals Removable RAM and Modular CPU - MacRumors
iMac 2013 Model Ram Upgrade - YouTube
SOLVED: Need more ram for iMac 21.5 late 2013 - iMac Intel 21.5" EMC 2638 - iFixit
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
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Upgrading an iMac — Buchanan Consulting
HOW I UPGRADED MY iMAC 21.5in Late 2013 MODEL (SSD & RAM UPGRADE) - YouTube
Install memory in an iMac - Apple Support
Apple iMac 21.5" Late 2013 Core i5 2.7GHz 8GB RAM 1TB HDD MacOS Big Sur 11.5.7 | eBay
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
21.5 inch late 2013 iMac - RAM upgrade - Apple Community
ESUS IT Memoria RAM UPGRADE 8GB per Apple iMac 21.5" Late 2012 & 27" Late 2012 2013 2014 | Mid 2015 DDR3 1600MHz SODIMM : Amazon.it: Informatica