From Amazon
OWC - In-line Digital Thermal Sensor Cable for upgrading the Hard Drive in 27-inch & 21.5-inch iMac (Late 2009 - Mid 2010) models
Compadvance
OWC Hd Upgrade Kit For All Imac
Athema Services
owc hd upgrade kit for all imac **new retail** owcdidimachdd09 - eet01