iMac Hard Disk Removal | iMac SSD Upgrade | Thermal Sensor Link Posted under Description - YouTube
SSD Upgrade Kits for 27-Inch iMac (2012 - Early 2013)
How much would a hard drive replacement cost for a 2012 21.5-inch iMac at the Apple Store? Should I get a third party SSD and replace it myself? - Quora
Deal4GO SSD Hard Drive Cable HDD SATA Data Power Cable Replacement for iMac 27 inch A1419 2012-2017 593-1330 923-0312 : Amazon.co.uk: Computers & Accessories
Willhom Hard Drive Data Combo SSD HDD Sata Cable Replacement for iMac 27" (Late 2012-2017) A1419 and (2019-2020) A2115 : Amazon.co.uk: Computers & Accessories
How To: Replace the Hard Drive in your 27" iMac (Late 2012) - YouTube
OWC DIY Drive Upgrade/Install Kits for Apple iMac Models
SSD Hard Drive Cable HDD SATA Data Power Cable 923-0312 Replacement for iMac 27 inch A1419 2012 2013 2014 2015 2017 Year : Amazon.co.uk: Computers & Accessories
maxupgrades.com: Dual SSD Drives kit for iMac 27 inch 2012 Models with Blade SSD Module with Heatsink and Power and DATA Cables
OWC DIY Drive Upgrade/Install Kits for Apple iMac Models