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
Amazon.com: OWC SSD Upgrade Kit for 2011 21.5-inch iMacs, Mercury Electra 1.0TB 6G SSD, 18" SATA III 6Gbps Data Cable, Installation Tools and iMac Screen Adhesive Tape Set : Electronics
OWC 500GB 6G SSD and HDD DIY Bundle Kit (for 21.5" iMac 2012 and later) | Megamac
Replaced 2017 iMac Fusion Drive with OWC SSD kit…. Didn't go as planned…. : r/osx
How to Upgrade iMac Hard Drive or SSD 2012-2022: EveryMac.com
Upgrade Kit For Apple Ssd 256gb Nvme Pcie 3.0 655-1993 Mz-kpw2560 For Macbook Pro Retina For Mac Pro For Imac Polaris - Pc Hardware Cables & Adapters - AliExpress
Internal SSD Cable Upgrade Kit for Apple 21.5" iMac 2011 Models