DIY SSD upgrade kit for late 2013-2019 iMac|iMac late 2013-2019 SSD with upgrade kit|Flexx Memory|Free UK Delivery
OWC SSD Upgrade Kits for 21.5-Inch iMac (2013 - 2019)
1.0TB Aura Pro X2 SSD Upgrade Solution for select 27" and 21.5" iMac models (Late 2013 - Current) - Macfixit Australia
maxupgrades.com: Single SSD Drives kit for iMac 27 inch 2012 Models with SATA Blade SSD Module / Heatsink/ Power Cable and DATA Cables for [SSD + HDD] with iMac Adhesive LCD Tape