Can you upgrade the RAM in the 27-inch iMac? | iMore
How To Upgrade RAM in a Mac | Macworld
How To Upgrade RAM in a Mac | Macworld
Apple's 4K 21.5-Inch iMac Allows You to Upgrade RAM and CPU – Company Finally Dialing Down on Soldered Components, Reveals Teardown
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
How to Install Ram on the 2019 27 inch iMac and which Ram to Buy? - YouTube
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com