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Used Apple iMac 21.5-inch (Retina 4K) 3.6GHZ Quad Core i7 (Mid 2017) MNE02LL/A-BTO - GainSaver
iMac (Retina 4K, 21.5-inch, 2017) - Technical Specifications
Fusion Drive - 9to5Mac
Apple iMac 4K Retina 21.5" Desktop - 3.0GHz Six-Core i5 - 8GB RAM - 1.03TB Fusion Drive - (2019) - Silver - Best Deal in Town
Apple iMac review (21.5-inch, 2015): 4K is optional, faster hard drives shouldn't be | Engadget
