You are Buying a Brand New And Factory Sealed PNY OPTIMA 2GB DDR2 667 MHz PC2-5300 Notebook / Laptop SODIMM Memory Module MN2048SD2-667 Product Description DDR2 is the next generation of DDR memory. DDR2 memory features faster speeds, greater bandwidth, lower power consumption and enhanced thermal performance. Although DDR2 modules are the same physical dimension as DDR modules, the plug-in connector configuration is different and as such DDR2 modules are not compatible with PCs requiring DDR modules, and vice-versa. PNY manufactures DDR2 memory upgrades rated at PC2-3200, PC2-4200, PC2-5300 and higher. They are compatible with desktop and notebook computers and processors including Intel`s Pentium, Celeron, Centrino, AMD`s Athlon and Sempron Socket AM2 processors, and others. PNY upgrade modules are compatible with systems from Apple, Compaq, DELL, Gateway, HP, IBM and over 5000 other systems. Boost the performance of your PC. PNY memory upgrades will prove to be an outstanding value now and in the future. Product Features and Technical Details Memory capacity upgrade provides improved system performance and responsiveness Deliver all the productivity your PC has to offer with PNY Memory Compatible with DDR2 PC2-5300 (667 MHz Bus Speed), DDR2 PC2-4200 (533 MHz Bus Speed), DDR2 PC2-3200 (400 MHz Bus Speed Helps prepare your PC for running Windows Vista Easy installation, Free 24-hour Technical Support, and Lifetime Warranty! Technical Details Model: MN2048SD2-667 Item Package Quantity: 1 RAM Memory Technology: DDR2 Form Factor: Laptop Memory Storage Capacity: 2 GB Memory Speed: 667 MHz Memory capacity upgrade provides improved system performance and responsiveness Deliver all the productivity your PC has to offer with PNY Memory Compatible with DDR2 PC2-5300 (667 MHz Bus Speed), DDR2 PC2-4200 (533 MHz Bus Speed), DDR2 PC2-3200 (400 MHz Bus Speed Helps prepare your PC for running Windows Vista Easy installation, Free 24-hour Technical Support, and Lifetime Warranty!