Apple iMac Late 2013 21.5-inch 2.7GHz Core i5 Apple DDR3 RAM Memory | Kingston
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
How to Upgrade Memory in a 27-inch iMac (Late 2012-2013) iMac13,2 and iMac14,2 - YouTube
Apple iMac (27-inch, Late 2013) iMac14,2 | Memory RAM & SSD Upgrades | Crucial.com
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Max Memory Upgrade at Amazon.com
16GB KIT 2X 8GB for Apple iMac 2.7GHz 21.5" Late 2013 2.93GHz 27" Late
How to upgrade RAM iMac late 2013 21.5inch - break & fix MOVIE - YouTube