How to Install a 2.5-inch SSD in the SSD Drive Bay of a 27-inch iMac Mid 2011 (Updated) - YouTube
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
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy for iMac 20 21.5 27 inch 2009 2010 2011 Early Late : Electronics