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2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider
What should you keep in mind when choosing RAM for your Apple iMac? - Coolblue - anything for a smile
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2017 Apple iMac 21.5-inch Intel i5 2.3 GHz 2-core 8GB RAM 256GB SSD - MacFinder - Certified Refurbished Apple Systems
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