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How to Upgrade/Install Memory in a 21.5-inch iMac (Mid 2017) iMac18,1 iMac18,2 - YouTube
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Teardown of new 21.5-inch iMac surprisingly reveals user-upgradable RAM, modular CPU - 9to5Mac
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Review: Apple's 21.5" iMac with Retina 4K display gets solid 2017 architectural refresh | AppleInsider
iMac 21.5-inch (2017) Review: Ultimate Refinement | Macworld
Install memory in an iMac - Apple Support
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Review: Apple's 2017 27" 5K iMac impresses with truly powerful desktop-class graphics | AppleInsider
Apple iMac 21.5" 4K (2017): Unboxing & Review - YouTube
iMac (21.5-inch, 2017) - Technical Specifications
Apple iMac with Retina 4K Display (21.5-inch, 8GB RAM, 256GB SSD Stora – 6ave Electronics
Apple iMac 21.5" Retina 4K - Mid 2017 Reviews, Pros and Cons | TechSpot
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Review: Apple's 21.5-in., 3.4GHz 'Kaby Lake' 2017 iMac | Computerworld
iMac 21.5" 2.7Ghz i5 RAM & SSD UPGRADE 2017 - YouTube
iMac (Retina 4K, 21.5-inch, 2017) - Technical Specifications
2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider
21.5-inch 3.0GHz 6-core Core i5 iMac (2019) review | Macworld
