Corsair VSA4GSDSKIT667C4 Mac Memory 4GB 2 X 2GB PC2-5300 667MHz 200-Pin SODIMM Memory for Apple Laptops,CORSAIR VALUE SELECT,VSA4GSDSKIT667C4" /> 4GB kit of 2x2GB modules Mac Memory Low Latency Solution - Increase your Mac memory performance by as much as 20% DDR2 - 667MHz non-ECC - 200pin SODIMM Unbuffered, CL4