Original 512GB SSD MZ-JPU512T/0A6 For Apple iMac 21.5-inch A1418 Retina(Late 2013 – Late 2015), iMac 27-inch A1419 Retina(Late 2013 – Late 2015), Mac mini (Late 2014), Mac Pro (Late 2013), MacBook Air
maxupgrades.com: Dual SSD Drives kit for iMac 27 inch 2012 Models with Blade SSD Module with Heatsink and Power and DATA Cables
SSD Upgrades for Apple iMac 27-Inch Late 2013 - 2019
iMac (27-inch, Late 2013) 1TB SSD Upgrade - NiwTech
OWC Aura SSD Install: 21.5-inch iMac Late 2012 – Early 2013 - YouTube