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
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
Amazon.com: OWC 6.0TB HDD Upgrade Kit Compatible With 2009-2010 iMacs, Includes: Thermal Sensor, Tools, 6.0TB Hard Drive : Electronics
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
iMac Repairs, SSD & RAM upgarades, Second Hard drive for more storage
iMac & Macbook SSD Upgrade - The Spark Angels
How To Upgrade/Replace Mid-2011 iMac 21.5" Hard Drive To an SSD! - YouTube
Apple iMac Repair, iMac Upgrade, iMac SSD Upgrade – TECHWERX
Amazon.com: OWC SSD Upgrade Kit for 2011 21.5-inch iMacs, Mercury Electra 1.0TB 6G SSD, 18" SATA III 6Gbps Data Cable, Installation Tools and iMac Screen Adhesive Tape Set : Electronics