Upgrading a 27-inch iMac 5K to 14 terabytes - Replacing the Fusion Drive with both a SSD and an harddisk
Apple 27" iMac Dual SSD Upgrade for Video Editing
iMac with Retina 5K Display 2014/2015 Memory Upgrades
HD Upgrade Kit for all iMac 2011 Models + Tools - 39.98EUR - OWCshop
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
OWC SSD Upgrade Kits for 27-Inch iMac 2011
iMac Intel 21.5" and 27" (Mid 2011) SSD Upgrade Bundle - iFixit Store
Amazon.com: Odyson - 1TB SSD Upgrade Kit Replacement for iMac 27" A1419 ( Late 2015) : Electronics