How to connect Thunderbolt 1 to iMac late 2013 - Quora
The Display - 21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
New CPUs, faster Wi-Fi, same flaws: Apple's 2013 iMac reviewed | Ars Technica
Apple Mac Pro review: Apple's radically reimagined Mac Pro is a powerhouse performer - CNET
iMac i5 3.2 27-inch (late 2013) ports/man… - Apple Community
Amazon.com: HumanCentric VESA Mount Adapter for iMac 24 Inch (Aluminum), iMac 27 Inch (2009, 2010, 2011), LED Cinema Display, Thunderbolt Displays, Replaces Apple iMac VESA Adapter MD179ZM/A, iMac VESA Kit : Electronics
IMac 21.5 late 2013 connection to external monitor | MacRumors Forums
Mac Pro (Late 2013) Thunderbolt Optimization – Universal Audio Support Home