New Lower-Cost 2014 iMac Teardown Reveals Memory Not User-Upgradable
Apple iMac 21.5" - Mid 2014 Reviews, Pros and Cons | TechSpot
iMac with Retina 5K Display 2014/2015 Memory Upgrades
Install memory in an iMac - Apple Support
New 21.5-inch iMac least repairable yet due to lack of RAM, hard drive upgradability - 9to5Mac
Install memory in an iMac - Apple Support
A-Tech for Apple 16GB Kit (2x 8GB) DDR3 1600MHz PC3-12800 204-pin SODIMM MacBook Pro (Mid 2012 13”/15”), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015, 21.5”/27”, Retina 5K) Memory RAM Upgrade at Amazon.com
Install memory in an iMac - Apple Support
Apple iMac 21.5' All in one Mid 2014 A1418 Intel Core i5 8GB RAM 480GB SSD A+ | eBay
Apple iMac 21.5” SSD Upgrade (2013-2015) HDD To Solid State Drive (SATA) | Step By Step - YouTube
Buy Used & Refurbished Apple iMac 21.5-inch (Mid-2014) 1.4GHz Core i5 500GB HDD 16GB RAM MF883LL/A - iMac
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), MacBook Pro (Early/Late 2011, Mid 2012), Mac Mini RAM at Amazon.com
Apple iMac (21.5-inch, 2014) review: A price cut for the 21-inch iMac makes it a mainstream machine - CNET
How to Upgrade/Install Memory in a 21.5-inch iMac (Mid 2017) iMac18,1 iMac18,2 - YouTube