Slightly used. Samsung 8GB 1Rx8 PC4-2666V-RD1-12-MA0 ECC REG Server Memory is a high-quality RAM module designed for servers and enterprise networking. With a total capacity of 8GB and the capability to correct errors through ECC memory, this DDR4 RAM ensures reliable and efficient performance for server systems. The RDIMM form factor and PC4-21300 bus speed make it compatible with a wide range of server configurations, providing a seamless upgrade option for businesses looking to enhance their computing capabilities. 1 module.