iMac (27-inch, Late 2013) - Technical Specifications
WiFi, IO & The Chassis - 21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
iMac | 3.4 GHz Core i5 | 27 Inch | Late 2013 - Techable.com
iMac i5 3.2 27-inch (late 2013) ports/man… - Apple Community
Apple iMac 21.5-inch 2.9GHz Quad-core i5 (Late 2013) ME087LL/A | mac of all trades
Apple 21-inch iMac, late 2013 review | TechRadar
Apple 27-Inch iMac (Late 2013) Review, Haswell Inside | HotHardware
Apple iMac review (2013) | Engadget
New CPUs, faster Wi-Fi, same flaws: Apple's 2013 iMac reviewed | Ars Technica
Differences Between Late 2012 and Late 2013 Aluminum iMac: EveryMac.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
Differences Between 2013/2014 iMacs and Late 2015 iMacs: EveryMac.com
iMac 27" 3.2GHz (Late 2013) | mac of all trades
iMac (late 2013) boot from usb slow | MacRumors Forums
iMac | 2.7 GHz Intel i5 | 21.5 Inch | Late 2013 - Techable.com