Apple's 21.5-inch iMac finally ditches mechanical hard drives for SSDs | AppleInsider
Apple iMac 24" M1 256GB SSD, 8-Core CPU Bundle | HSN
PRE-LOADED 256GB SSD MAC OS SIERRA 2.5” HDD for APPLE MACBOOK PRO & MAC MINI | eBay
Amazon.com: Apple iMac 21.5in 2.7GHz Core i5 (ME086LL/A) All In One Desktop, 8GB Memory, 256GB Solid State Drive, MacOS 10.12 Sierra (Renewed) : Electronics
OWC 1.0TB Aura 6G SSD for iMac Late 2012/Early 2013 (NOT for iMac 21,5"/late 2012/13,1 2.7GHz)