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
OWC Announces RAM Upgrades for New 27-Inch 5K iMacs - MacRumors
OWC 64GB DDR4 2400 MHz SO-DIMM Memory Upgrade Kit
Memory Upgrades for 2017 iMac 27-Inch
Upgrade your iMac with OWC, 2017 4K Retina Edition | TweakTown
OWC OWC2400DDR4S16P Owc 16Gb (2 X 8Gb) Pc19200 Ddr4 2400Mhz So-Dimms Memory Compatible With 27" Imac W/Retina 5K (Mid 2017), Mac Mini (Late 2018), A
How to upgrade the 27-inch 5K iMac (2019) with a massive 128GB of RAM [Video] - 9to5Mac
A-Tech 16GB (2x8GB) RAM for Apple iMac 2017 (27 inch Retina 5K & 21.5 inch Retina 4K) | DDR4 2400MHz SODIMM PC4-19200 1.2V 260-Pin SO-DIMM Memory Upgrade Kit at Amazon.com
Upgrade your iMac with OWC, 2017 4K Retina Edition | TweakTown
Base model iMac Pro teardown sheds more light on its upgrade potential - 9to5Mac
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
OWC Confirms 64GB of RAM in Apple 27" iMac 2017
How to Install Memory Into a 27-Inch Apple iMac (Late 2015 - 2020) iMac17,1 iMac18,3 iMac19,1 - YouTube