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iMac 21.5-Inch "Core i5" 3.1 (4K, Late 2015) Specs (Retina 4K, Late 2015, MK452LL/A, iMac16,2, A1418, 2833): EveryMac.com
Differences Between Mid-2017 iMac Retina 4K/5K Models: EveryMac.com
Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
iMac 21.5-inch (2017) Review: Ultimate Refinement | Macworld
iMac 21.5-inch 4K (2017) Review | Trusted Reviews
Apple iMac 21.5-Inch With 4K Retina Display (2017) Review | PCMag
2017 - 21.5" 4K Retina iMac, 3.0GHz Quad Core i5 Processor, 8GB RAM, 2 – The Apple Xchange - Preowned Apple Products and Services
Apple iMac 21.5-Inch With 4K Retina Display (2017) Review | PCMag
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Best Buy: Apple 21.5" iMac® Intel Core i5 (2.3GHz) 8GB Memory 1TB Hard Drive Silver MMQA2LL/A
iMac 21.5-inch 4K (2017) Review | Trusted Reviews
iMac (21.5-inch, 2017) - Technical Specifications
Apple's new iMacs get better screens and specs, and Force Touch comes to the desktop – GeekWire
Review: The 2019 21.5-inch iMac 4K is iterative, not transformative | AppleInsider
Apple 21.5" iMac with Retina 4K Display (Mid 2017)
Review: Apple's 21.5" iMac with Retina 4K display gets solid 2017 architectural refresh | AppleInsider
Used Apple iMac 21.5-inch (Retina 4K) 3.0GHZ Quad Core i5 (Mid 2017) MNDY2LL/A - GainSaver
