How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
iMac Hard Disk Removal | iMac SSD Upgrade | Thermal Sensor Link Posted under Description - 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
Imac SSD Upgrade service Bolton Manchester London UK SSD Drive Upgrade 500GB SSD