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
OWC Hard Drive Upgrade Kit for Apple iMac 2011
iMac 27-inch Mid 2011 SSD - Macfixit Australia
Amazon.com: OWC Data Doubler Kit for 2009-2011 iMac, 1.0TB 3G SSD with Mounting Solution and Toolkit : Electronics
OWC SSD Upgrade Kits for 27-Inch iMac 2011
OWC HDD Upgrade Kit with Tools and Digital Thermal Sensor for all iMac 2011 | eBay
owc inline digital thermal sensor hdd upgrade cable for imac 2011 Serial Cables - Newegg.com
New 2TB SSD in the iMac! Upgrade kit from OWC is awesome! : r/mac