Base model iMac Pro teardown sheds more light on its upgrade potential - 9to5Mac
Apple iMac 21.5 2017 4k with 2TB OWC SSD Upgraded to 64GB RAM | eBay
OWC OWC2400DDR4S16G-S - Memoria RAM iMac 2400MHz
OWC 16GB (2 x 8GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with 27" iMac w/Retina 5K (Mid 2017), Mac Mini (Late 2018), and Compatible PCs | Walmart Canada
Surprise! The iMac Pro has Upgradable RAM and SSD - The Mac Observer
OWC 16GB 2400MHZ DDR4 SO-DIMM PC4-19200 Aggiornamento della Memoria per 2017 iMac 27 Pollici con Display Retina 5K, (OWC2400DDR4S16G) : Amazon.it: Informatica
iMac Pro Memory RAM - Macfixit Australia
64.0GB(2x32GB) OWC Memory Upgrade Kit For 21.5" iMac with Retina 4K & Non-Retina Display (2017) - ynzal.com
OWC - 64GB OWC Kit per l'espansione della memoria - 4 x 16GB PC19200 DDR4 2400MHz SO-DIMMs per iMac 27” con Display Retina 5K (Mid 2017) e PC compatibili : Amazon.it: Informatica
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube