Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
4 Modules 4 X 4GB DDR4-2400MHz RAM For iMac 2017 27" Retina 2 ARE Apple MICRON | eBay
DDR4 | 2017 iMac | 32GB | SO-DIMM | iMac Memory
Crucial DDR4 kit 16 GB 2 x 8 GB SO DIMM 260 pin 2400 MHz PC4 19200 CL17 1.2 V unbuffered non ECC for Apple iMac with Retina 5K display Mid 2017 - Office Depot
Apple Memory Module 16GB DDR4 2400MHz SO-DIMM (2x8GB) - Apple
OWC 16GB (2 x 8GB) PC19200 DDR4 2400MHz 260pin SO-DIMMs Memory Ram Upgrade Compatible with 27" iMac w/Retina 5K (Mid 2017) and Compatible PCs (OWC2400DDR4S16P) at Amazon.com
Apple iMac 5K 27 Inch 2017 4.2 GHz Core i7 512GB SSD 32GB RAM 8GB GFX – Quality Macs
OWC 32GB (4x8GB) 2400MHZ 260pin DDR4 SO-DIMM PC4-19200 MemoryRam Module Upgrade Compatible with 2017 iMac 27 inch with Retina 5K Display (OWC2400DDR4S32S) at Amazon.com
Other World Computing | www.shi.com
Apple A Grade Desktop Computer 27-inch iMac A1419 2017 MNEA2LL/A 3.5 GHz Core i5 (I5-7600) 32GB RAM 2 TB SSD Storage Mac OS Include Keyboard and Mouse - Walmart.com
32GB (2X 16GB) DDR4 2400MHz PC4-19200 SO-DIMM RAM Memory Upgrade for 2017 iMac 27 inch with 5K Retina Display (PARTS-QUICK) - Walmart.com