The PNY Optima 2GB Kit includes two 1GB DDR2 SODIMM memory modules with a bus speed of PC2-5300 (DDR2-667). These modules are designed for laptops and provide a total capacity of 2GB. The memory kit is manufactured by PNY, a trusted brand known for producing reliable computer components. Perfect for upgrading or replacing existing memory modules in laptops, this product offers a fast and efficient solution for enhancing your machine's performance.