Crucial 8GB Kit (4GBx2) DDR4 2133 MT/s (PC4-2133) CL15 SR x8 ECC Registered DIMM 288-Pin Server Memory CT2K4G4RFS8213 Increased memory bandwidth Reduce power consumption Premium quality memory from a trusted brand Limited Lifetime Warranty, 100% Tested Identical to model number: CT2C4G4RFS8213