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 Repair & Upgrade, Same Day Services
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
SSD Installation Kit for 2011 iMac 27-Inch Models
2011 IMAC SAMSUNG 1TB 850 PRO SSD UPGRADE - YouTube