CT2K4G4DFS8213 is a 8GB Kit consisting of (2) 4GB DDR4 desktop modules that operates at speeds up to 2133 MT/s and has a CL15 latency. It is an Unbuffered DIMM. It conforms to the industry standard DDR4 ECC UDIMM layout of 288 pins and is compatible with systems that take DDR4 2133MT/s UDIMM memory.