The Crucial 16GB Kit 4x 4GB 1RX8 PC4-2666 MTA9ASF51272PZ-2G6E1QG is a high-quality DDR4 SDRAM memory kit designed for server use. With a total capacity of 16GB spread across 4 modules, each with a capacity of 4GB, this memory kit offers reliable performance and stability. The manufacturer warranty for a lifetime ensures long-lasting support and peace of mind. Featuring ECC memory and a bus speed of PC4-21300 (DDR4-2666), this memory kit is a great choice for enhancing the performance of server environments.