The product is a Micron 4GB (2x4GB) 2RX4 PC2-5300P-555-12-J0 DDR2 Server ECC RAM. It features a total capacity of 4GB spread across two modules, with each module containing 2GB of memory. The RAM is of ECC memory type, registered, and has a form factor of DIMM. With a bus speed of PC2-5300 (DDR2-667), this RAM is designed for servers and enterprise networking applications. The Micron brand ensures reliability in delivering high-performance memory solutions for servers.