iMac Intel 21.5" EMC 2544 RAM Replacement - iFixit Repair Guide
661-02988) Logic Board, 3.3GHz i7, 16GB, SSD - iMac 21.5″ A1418 (Late 2015)
Teardown of new 21.5-inch iMac surprisingly reveals user-upgradable RAM, modular CPU - 9to5Mac
iMac Retina 5K: Memory upgrade (RAM)
New 21.5-inch iMac least repairable yet due to lack of RAM, hard drive upgradability - 9to5Mac
Install memory in an iMac - Apple Support
Upgrade RAM on Apple Retina iMac 5K (Late 2015) / How To install memory - YouTube
iMac Intel 21.5" EMC 2889 Teardown - iFixit
A-Tech 16GB (2x8GB) RAM for Apple iMac Late 2015 27 inch Retina 5K | DDR3L 1866MHz / 1867MHz PC3L-14900 1.35V 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
Install memory in an iMac - Apple Support
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
Apple iMac (21.5-inch, Late 2015) review | TechRadar
iMac RAM Upgrade 8GB-32GB (Late 2015) - YouTube
iMac Intel 21.5" Retina 4K Display Teardown - iFixit
Differences Between Late 2015 iMac Retina 4K/5K Models: EveryMac.com
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Memory Upgrades for iMac w/ Retina 5K Display Late 2015
iMac (21.5-inch, 1.6GHz Intel Core i5, Late 2015) | iGotOffer
How To Upgrade RAM in a Mac | Macworld
Install memory in an iMac - Apple Support
Apple iMac with 4K Retina display (21.5-inch, 2015) review: Apple packs more pixels into its smallest iMac - CNET
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
