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Amazon.com: Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for iMac (Mid 2010 27 inch, Mid 2011 21.5/27 inch) SODIMM Memory Module MAC RAM Upgrade for iMac 11,3 / iMac 12,1 / iMac 12, 2 : Electronics
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Apple Certified Refurbished iMac 21.5" 4K Intel Core i5 16GB RAM 1TB SSD (2019 Model / 1-Year Warranty) G0VY7LL/A - US
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Amazon.com: A-Tech 32GB (2x16GB) RAM for 2017 iMac 21.5 inch Non-Retina | DDR4 2133MHz PC4-17000 SO-DIMM 260-Pin CL15 1.2V Non-ECC Unbuffered Memory Upgrade Kit : Electronics
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2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider
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