Adamanta 16GB (1x16GB) Memory Upgrade for 2017 Apple iMac 27" Retina 5K Display DDR4 2400Mhz PC4-19200 SODIMM 2Rx8 CL17 1.2v Dual Rank RAM DRAM - Walmart.com
Adamanta 16GB (2x8GB) Memory Upgrade Compatible for 2017 Apple iMac 27"/21.5" Retina 5K/4K or Non-Retina Display DDR4 2400MHz PC4-19200 SODIMM 1Rx8 CL17 1.2v Single Rank RAM DRAM at Amazon.com
Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
Apple 21.5-inch 4K iMac Teardown Reveals Upgradeable Kaby Lake CPU And RAM | HotHardware
How to Upgrade the Memory in the iMac Pro (late 2017) - YouTube
How to upgrade the 27-inch 5K iMac (2019) with a massive 128GB of RAM [Video] - 9to5Mac
iMac Retina 5K: Memory upgrade (RAM)
Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
Apple iMac 21.5-Inch With 4K Retina Display (2017) Review | PCMag
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
Can you upgrade the RAM in the 27-inch iMac? | iMore
Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac with Retina 5K Display 2014/2015 Memory Upgrades