How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
HOW I UPGRADED MY iMAC 21.5in Late 2013 MODEL (SSD & RAM UPGRADE) - YouTube
Final Words - 21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
How To Upgrade RAM on the Apple iMac 2012 - 2013 RAM Upgrade - 21.5 inch model - YouTube
21.5" iMac Has No User-Upgradable RAM; 27" Has Four Accessible RAM Slots - MacRumors
Apple iMac 21.5" Desktop - 3.1GHz Quad-Core i7 - 16GB RAM - 256GB SSD - ( 2013) - Silver - Best Deal in Town
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 at Amazon.com
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Apple iMac 21.5" 2013 A1418 ME086LL/A Core i5 8GB RAM 1TB HDD NO OS | eBay
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
16GB KIT 2X 8GB for Apple iMac 2.7GHz 21.5" Late 2013 2.93GHz 27" Late
16GB Memory Upgrade Kit for 2012-2013 iMac 21.5-Inch
SOLVED: Need more ram for iMac 21.5 late 2013 - iMac Intel 21.5" EMC 2638 - iFixit
Apple iMac 21.5-Inch (Late 2013) "Core i5" 8GB RAM 1TB HDD Intel Iris Pro | eBay
Install memory in an iMac - Apple Support
iMac Late 2013 21.5 SSD Upgrade - YouTube
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013