Amazon.com: GODSHARK 7+17 pin mSATA to A1398 A1425 (2012 & Early 2013) Adapter for MacBook Pro Retina SSD Replacement, Mini PCIe SATA SSD Converter Card : Electronics
Upgrading a 27-inch iMac 5K to 14 terabytes - Replacing the Fusion Drive with both a SSD and an harddisk
How to Add An SSD To The 27" iMac (Late 2015) - iFixit Repair Guide
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
How to Add An SSD To The 27" iMac (Late 2015) - iFixit Repair Guide
Can I upgrade iMac (Late 2015) fusion drive to SSD? | MacRumors Forums
Amazon.com: OWC 1.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), and Mac Mini (Late 2014) : Electronics
Apple 21.5" iMac® with Retina 4K display Intel Core i5 (3.0GHz) 8GB Memory 256GB SSD Silver MHK33LL/A - Best Buy
maxupgrades.com: Dual SSD Drives kit for iMac 27 inch 2012 Models with Blade SSD Module with Heatsink and Power and DATA Cables
Amazon.com: FLEANE FM13A 1TB PCIE 3.0x4 NVME SSD with DIY Tools for MacBook Air A1465 A1466 (Mid2013-Mid2017), MacBook Pro Retina A1398 A1502 (Late 2013-Mid 2015), iMac A1419 A1418 (Late 2013-Mid 2017) (1TB) :
Amazon.com: SATA Blade SSD Module - Dual SSD Drive Kit for iMac 27 Inch 2012 Model : Electronics
iMac 5K - 4790K, M295X - thermal compound + second SSD upgrade + Air Vents MOD | MacRumors Forums
SSD Upgrade Kits for 27-Inch iMac (2012 - Early 2013)
iMac 27" 2013 SSD upgrade - IT-Tech Online
Apple iMac 21.5” SSD Upgrade (2013-2015) HDD To Solid State Drive (SATA) | Step By Step - YouTube