Crucial 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 2133 (PC4 17000) Desktop Memory Model CT2K8G4DFS8213 Cas Latency: 15 Voltage: 1.2V Buffered/Registered: Unbuffered Features: CT2K8G4DFS8213 is a 16GB Kit consisting of (2) 8GB Single Ranked 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.