How to Add An SSD To The 27" iMac (Late 2015) - iFixit Repair Guide
iMac 17,1 replace pcie ssd - Apple Community
2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan
hard drive - iMac 27" late 2012 SSD upgrade - Ask Different