Memory Upgrade Kit: 8 GB (2x 4GB) PC8500 DDR3 Non ECC 1066 MHz 204-pin, CL 7, 1.5V, Non ECC | Compatible with 2008, 2009: Late 2009 MacBook (Model ID: MacBook6,1), Late 2008 MacBook(Model ID: MacBook5,1) | Compatible with 2009 iMac Models: iMac 27-inch Late 2009 (Model ID: iMac10,1; iMac11,1), iMac 24-inch Early 2009 (Model ID: iMac9,1), iMac 21.5-inch Late 2009 (Model ID: iMac10,1), iMac 20-inch Early 2009 (Model ID: iMac9,1) | Compatible with 2008, 2009: 17-inch MacBook Pro (Model ID: MacBookPro6,1), 17-inch MacBook Pro (Model ID: MacBookPro5,2), 15-inch MacBook Pro (Model ID: MacBookPro6,2), 15-inch MacBook Pro (Model ID: MacBookPro5,4), 15-inch MacBook Pro (Model ID: MacBookPro5,3), 15-inch MacBook Pro (Model ID: MacBookPro5,1), 13-inch MacBook Pro (Model ID: MacBookPro5,5) | Lifetime OWC Limited Warranty with 2008, 2009, 2010 MacBook Pro Models: 17-inch MacBook Pro (Model ID: MacBookPro6,1), 17-inch MacBook Pro (Model ID: MacBookPro5,2), 15-inch MacBook Pro (Model ID: MacBookPro6,2), 15-inch MacBook Pro (Model ID: MacBookPro5,4), 15-inch MacBook Pro (Model ID: MacBookPro5,3), 15-inch MacBook Pro (Model ID: MacBookPro5,1), 13-inch MacBook Pro (Model ID: MacBookPro7,1), 13-inch MacBook Pro (Model ID: MacBookPro5,5)