Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade : Amazon.ca: Electronics
i5 Apple iMac Desktop, Screen Size: 21.5, Memory Size: 8GB at Rs 90000 in Bengaluru
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
New 21.5-inch iMac least repairable yet due to lack of RAM, hard drive upgradability - 9to5Mac
64GB RAM upgrade kit for 21.5-inch iMAC now offered by OWC - 9to5Mac
Teardown of New 4K 21.5-inch iMac Reveals Removable RAM and Modular CPU - MacRumors
Install memory in an iMac - Apple Support
How to: 27-inch 5K iMac (2019) 128GB RAM Upgrade - Save $$$! - YouTube