Capacity: 8GB (1X8GB) DDR4 UDIMM memory module. 2133MHz frequency, PC4-17000 speed, ECC error correction. Form Factor: 1RX8 single-rank, UDIMM unbuffered DIMM. Compatibility: Designed for server and workstation systems supporting DDR4 ECC memory. Reliability: Rimlance brand memory modules undergo rigorous testing for stability and longevity.