2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac 2019 & 2020 27 inch Retina 5K | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade
iMac 27" 5K 2015 i7 4.0 GHz - 3TB Fusion - 32GB Ram – Loop Mobile ES
HOW TO: Upgrade The RAM to 32GB on a Mid-2011 21.5inch iMac - YouTube
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
Adamanta 32GB (2x16GB) Memory Upgrade Compatible for 2017 Apple iMac 27" Retina 5K Display DDR4 2400MHz
Timetec 32 GB Kit (4 x 8 GB) Compatible con Apple iMac Finales de 2015 (27 Pulgadas con Pantalla Retina 5K) DDR3L 1867 MHz/1866 MHz PC3L-14900 2Rx8 CL13 1,35 V 204 Pines SODIMM Mac RAM : Amazon.es: Informática
RAM Upgrade (32GB) for iMac 27" (2019 & 2020), Mac mini (2018) - Specular