OWC 6.0GB Kit (2.0GB+4.0GB) PC2-5300 DDR2 667MHz SO-DIMM 200 Pin Memory Upgrade Kit 2.0GB+4.0GB (6.0GB) PC2-5300 DDR2 667MHz SO-DIMM 200 Pin Memory Upgrade Kit Memory Upgrade Module For Apple MacBook, MacBook Pro, iMac Intel, and PC Laptops Compatible with Early 2009 MacBook (Model ID:MacBook5,2) and 2008 MacBook (Model ID:MacBook4,1) and Late 2007 MacBook (Model ID:MacBook3,1) Compatible with 17-inch MacBook Pro (Model ID:MacBookPro4,1) 17-inch MacBook Pro (Model ID:MacBookPro3,1) 15-inch MacBook Pro (Model ID:MacBookPro4,1) 15-inch MacBook Pro (Model ID:MacBookPro3,1) Compatible with 24-inch iMac (Model ID:iMac7,1) 20-inch iMac (Model ID:iMac7,1) MacBook (Early 2009)(January, 2009) Model ID: MacBook5,2 (2.0GHz) MacBook (Late 2008)(October, 2008) Model ID: MacBook4,1(2.1GHz) MacBook (Early 2008)(February, 2008) Model ID: MacBook4,1(2.1GHz, 2.4GHz) MacBook (Late 2007)(November, 2007) Model ID: MacBook3,1(2.0GHz, 2.2GHz) MacBook Pro (17-inch Late 2008)(October, 2008) Model ID: MacBookPro4,1(2.5GHz, 2.6GHz) MacBook Pro (17-inch Early 2008)(February, 2008) Model ID: MacBookPro4,1(2.5GHz, 2.6GHz) MacBook Pro (17-inch Mid/Late 2007)(June, 2007) Model ID: MacBookPro3,1(2.4GHz, 2.6GHz) MacBook Pro (15-inch Early 2008)(February, 2008) Model ID: MacBookPro4,1(2.4GHz, 2.5GHz, 2.6GHz) MacBook Pro (15-inch Mid/Late 2007)(June, 2007) Model ID: MacBookPro3,1(2.2GHz, 2.4GHz, 2.6GHz) iMac (24-inch Mid 2007)(August, 2007) Model ID: iMac7,1(2.4GHz, 2.8GHz) iMac (20-inch Mid 2007)(August, 2007) Model ID: iMac7,1(2.0GHz, 2.4GHz) with Intel / AMD Process based PCs <span class="a-text-bold">Size:</span>2.0GB / 4.0GB 200-pin <span class="a-text-bold">Data Rate</span>= 667MHz <span class="a-text-bold">CAS</span>= 5.0 Low Noise 8-Layer PCB Meets and/or Exceeds Apple/Intel Specifications Fully compliant with JEDEC specifications