OWC - In-line Digital Thermal Sensor Cable for upgrading the Hard Drive in 27-inch & 21.5-inch iMac (2011) models : Amazon.co.uk: Computers & Accessories
OWC SSD Upgrade Kits For 27-Inch IMac 2011, 51% OFF
OWC SSD Upgrade Kits For 27-Inch IMac 2011, 51% OFF