Consomac : Comment ajouter de la mémoire vive sur l'iMac 27'' de 2019 ?
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
Can you upgrade the RAM in the 27-inch iMac? | iMore
Install memory in an iMac - Apple Support
How to Upgrade/Replace the Memory in a 21.5-inch iMac (2019) iMac19,2 - YouTube