A-Tech For Apple 4GB Kit 2 x 2GB PC2-5300 iMac MacBook Pro Mid 2007 Mid 2007 Early 2008 MA897LL/A A1229 MB133LL/A A1260 MB134LL/A MB166LL/A A1261 MA876LL A1224 MA877LL MA878LL A1225 Memory RAM 4GB Kit 2x 2GB (2 x 2GB) SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For iMac, MacBook Pro Models:Early 2008 Mid 2007 Mid-2007 MA876LL MA877LL MA878LL MA897LL/A MB133LL/A MB134LL/A MB166LL/A A1224 A1225 A1229 A1260 A1261 iMac7,1 MacBookPro3,1 MacBookPro4,1