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Teardown of new 21.5-inch iMac surprisingly reveals user-upgradable RAM, modular CPU - 9to5Mac
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Apple's new 'Assembled in USA' iMac a bear to upgrade, repair • The Register
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Late 2013 iMac review: Faster than before, but the gains over previous models are modest | Macworld
21.5-inch iMac (Late 2013) Review: Iris Pro Driving an Accurate Display
Teardown of New 4K 21.5-inch iMac Reveals Removable RAM and Modular CPU - MacRumors
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Install memory in an iMac - Apple Support
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SOLVED: Need more ram for iMac 21.5 late 2013 - iMac Intel 21.5" EMC 2638 - iFixit
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
How to Upgrade iMac Hard Drive or SSD 2012-2022: EveryMac.com
21.5 inch late 2013 iMac - RAM upgrade - Apple Community
