The Samsung M393B5170EH1-CH9 4GB DDR3-1333MHz ECC Registered RDIMM is a high-quality server memory module designed for enterprise networking and server systems. With a total capacity of 4GB split into one module, this DDR3 SDRAM RDIMM features a bus speed of PC3-10600R (DDR3-1333) and 240 pins for easy installation. The module also includes ECC memory features for reliable error correction, making it a dependable choice for businesses that require consistent and reliable performance from their server systems. With the trusted Samsung brand behind it, this memory module offers a reliable and efficient solution for enhancing server performance.