The Hynix HYMP151F72CP4D3-S5 4GB DDR2-667MHz PC2-5300 ECC FBDIMM Server Memory is a high-quality memory module designed for server use. With a total capacity of 4GB and a bus speed of PC2-5300 (DDR2-667), this memory module provides reliable performance for server applications. The DDR2 FB-DIMM SDRAM form factor and ECC memory features ensure compatibility and error correction for a seamless computing experience. Perfect for businesses and organizations looking to enhance server capacity and performance.