2013 Mac Pro 8 core 3.5GHz | Dual D500 3GB| 32GB RAM 1TB SSD | Apple Trashcan | eBay
iMac (Late 2013) | Low End Mac
iMac | 3.3 GHz Intel i3 | 21.5 Inch | Early 2013 - Techable.com
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac | 3.1 GHz Intel i7 | 21.5 Inch | Late 2013 - Techable.com
Apple iMac 21.5-inch and 27-inch (Late 2013) reviews | Macworld
iMac | 2.7 GHz Intel i5 | 21.5 Inch | Late 2013 - Techable.com
21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
A-Tech 16GB Kit (2x8GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
New CPUs, faster Wi-Fi, same flaws: Apple's 2013 iMac reviewed | Ars Technica
21.5 inch late 2013 iMac - RAM upgrade - Apple Community
Apple iMac Late 2013 - 21.5-Inch - Core i5 - 8 GB RAM - 1 TB HDD – PCMaster Pro
Amazon.com: Apple iMac 27in Late 2013 A1419 3.5ghz 8gb RAM 1TB HDD El Capitan (Renewed) : Electronics
Amazon.com: 2013 Apple iMac with 3.2GHz Intel Core i5 (27-inch, 8GB 1TB Mac OS X) (Renewed) : Electronics