How to Upgrade/Install Memory in a 21.5-inch iMac (Mid 2017) iMac18,1 iMac18,2 - YouTube
The New 2017 iMac: Notes & Tidbits on RAM- The Mac Observer
Adamanta 32GB (2x16GB) Memory Upgrade Compatible for 2017 Apple iMac 27” Retina 5K Display & iMac 21.5” Retina 4k Display DDR4 2400MHz PC4-19200 SODIMM 2Rx8 CL17 1.2v Dual Rank RAM DRAM at Amazon.com
Timetec Kit de 32GB (2x16GB) Compatible para Apple 2017 iMac (27 Pulgadas con Retina 5K, 21.5 Pulgadas) DDR4 2400MHz PC4-19200 SODIMM Mac RAM Upgrade para iMac18.1/iMac18.2/iMac18,3 : Amazon.es: Informática