Late 2013 iMac review: Faster than before, but the gains over previous models are modest | Macworld
WiFi, IO & The Chassis - 21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
Apple iMac 21.5″ Intel i7 (Late 2013) | Dynemac
iMac (21.5-inch, Late 2013) - Technical Specifications
Refurbished Late 2013 21.5-Inch iMac Debuts in Apple's Online Store - MacRumors
Amazon.com: Apple iMac 21.5in 2.7GHz Core i5 (ME086LL/A) All In One Desktop, 8GB Memory, 256GB Solid State Drive, MacOS 10.12 Sierra (Renewed) : Electronics