Full Details on Amazon.com : http://www.amazon.com/gp/product/B00607HK1O?tag=tsukuyomi-20

Komputerbay 8GB (2x 4GB) DDR3 SODIMM (204 pin) 1066Mhz PC3-8500 (7-7-7-20) Laptop Notebook

Komputerbay 8GB 2x 4GB DDR3 SODIMM 204 pin 1066Mhz PC3-8500 7-7-7-20 Laptop Notebook Memory for Apple iMac
Lifetime Warranty
Compatible with iMac 266GHz Intel Core 2 Duo 20-inch - DDR3 MB417LLA DesktopPC iMac 266GHz Intel Core 2 Duo 24-inch - DDR3 MB418LLA DesktopPC iMac 266GHz Quad-Core Intel Core i5 27-inch - DDR3 Late 2009 DesktopPC
iMac 28GHz Quad-Core Intel Core i7 27-inch - DDR3 Late 2009 DesktopPC iMac 293GHz Intel Core 2 Duo 24-inch - DDR3 MB419LLA DesktopPC iMac 306GHz Intel Core 2 Duo 215-inch - DDR3 Late 2009 DesktopPC iMac 306GHz Intel Core 2 Duo 24-inch - DDR3 MB420LLA DesktopPC
iMac 306GHz Intel Core 2 Duo 27-inch - DDR3 Late 2009 DesktopPC iMac 333GHz Intel Core 2 Duo 215-inch - DDR3 Late 2009 DesktopPC iMac 333GHz Intel Core 2 Duo 27-inch - DDR3 Late 2009 DesktopPC