A-Tech For Apple 4GB Module PC3-8500 1066MHz Mac mini iMac Mid 2009 Late 2009 Early 2009 MB419LL/A A1225 MB420LL/A MC015LL/A A1224 MC015LL/B MB463LL/A A1283 MC238LL/A MC239LL/A MC408LL/A Memory RAM 4GB Module (1 x 4GB) SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For iMac, Mac mini Models:Early 2009 Late 2009 Mid-2009 MB419LL/A MB420LL/A MB463LL/A MC015LL/A MC015LL/B MC238LL/A MC239LL/A MC408LL/A A1224 A1225 A1283 iMac9,1 Macmini3,1