The PNY 2 GB PC Memory is a DDR2 SDRAM module with a total capacity of 2 GB and a bus speed of PC2-6400 (DDR2-800). This memory module is designed for improving the performance and speed of computers that use DDR2 memory technology. The open box indicates that the product is not sealed, but it is still a reliable and high-quality memory module from the trusted brand PNY. Perfect for upgrading or replacing existing memory modules in computers.