How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
iMac 2011 27" Apple stock SSD swap | MacRumors Forums
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