How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
Internal SSD Cable Upgrade Kit for Apple 21.5 Inch iMac 2011 Models - Walmart.com
2011 IMAC SAMSUNG 1TB 850 PRO SSD UPGRADE - YouTube
Amazon.com: OWC SSD Upgrade Kit for 2011 21.5-inch iMacs, Mercury Electra 250GB 6G SSD, 18" SATA III 6Gbps Data Cable, Installation Tools and iMac Screen Adhesive Tape Set : Electronics
How to Install a 2.5-inch SSD in the SSD Drive Bay of a 27-inch iMac Mid 2011 (Updated) - YouTube
OWC SSD Upgrade Kits For 21.5-Inch iMac 2011
How to Install a 2.5-inch SSD in the SSD Drive Bay of a 21.5-inch iMac (Mid 2011) iMac12,1 - YouTube