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
Apple iMac 27" - Core i5 3.4GHz (September 2013) 8GB RAM 1TB HDD - Very Good 50742929541 | eBay
8GB 2 X4GB Memory for iMac 27" inch 3.2GHz Quad Core Intel Core i5 Late 2013 ME088LL/A 1600MHz DDR3 (PC3-12800) SO-DIMMs RAM (PARTS-QUICK Brand)
How to Upgrade Memory in a 27-inch iMac (Late 2012-2013) iMac13,2 and iMac14,2 - YouTube
21.5 inch late 2013 iMac - RAM upgrade - Apple Community
HOW I UPGRADED MY iMAC 21.5in Late 2013 MODEL (SSD & RAM UPGRADE) - YouTube
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM: 2012-2022: EveryMac.com
How to upgrade RAM iMac late 2013 21.5inch - break & fix MOVIE - YouTube
Apple iMac (27-inch, Late 2013) 3.5GHz Quad Core i7, 32GB RAM, 1TB SSD | eBay