How to Upgrade/Replace the Main Drive in a 21.5-inch iMac (Late 2012 - Late 2015) UPDATED - YouTube
How To Upgrade/Replace Mid-2011 iMac 21.5" Hard Drive To an SSD! - YouTube
Apple iMac 2019 (Early) 21.5-inch (Retina 4k) OSX , Ram & SSD Upgrades - ZD Laptop Service Centre
Reemplazo del SSD del iMac Intel de 21.5" Retina 4K Display (2017) - Guía de reparación iFixit
Reemplazo del SSD del iMac Intel de 21.5" Retina 4K Display (2017) - Guía de reparación iFixit
1TB Solid State Drive SSD for Apple iMac 21.5-inch A1418 A2116 iMac 27-inch A1419 A2115 (Mid 2017- Mid 2019)
OWC SSD Upgrade Kits for 21.5-Inch iMac (2013 - 2019)
Reemplazo de Disco duro de iMac Intel 21.5" Retina 4K Display - Guía de reparación iFixit
OWC 2TB SSD Upgrade Kit iMac 21.5" 2012-2019
Amazon.com: OWC SSD Upgrade Kit for 2011 21.5-inch iMacs, Mercury Electra 250GB 6G SSD, 18" SATA III 6Gbps Data Cable, Installation Tools and iMac Screen Adhesive Tape Set : Electronics
2019 iMac 21.5” SSD Upgrade - Samsung 1tb 970 Evo Plus NVME Upgrade - SUCCESSFUL | MacRumors Forums