The UCS-MR-1X162RZ-A Cisco Samsung M393B2G70DB0-CMA 16GB 2RX4 PC3-14900R DDR3-1866 is a server memory module designed for high performance in enterprise networking and server applications. With a total capacity of 16GB spread across 8 modules, each with a capacity of 16GB, this DDR3 SDRAM memory operates at a fast bus speed of PC3-14900 (DDR3-1866). Manufactured by Samsung, this RDIMM module is a reliable choice for enhancing the memory capacity and speed of servers in a networking environment.