64GB DDR4 2666 ECC LR-DIMM Module
64GB Module - DDR4L - ECC - Load Reduced - 2666MT/s - PC4L-21300 - 19ns CAS Latency - 1.2V
64GB DDR4-2666 ECC RDIMM
64GB Module - DDR4 - ECC - Registered - 2666MT/s - PC4-23400 - 19ns CAS Latency - 1.2V - 5 Year Depot Carry-In Mfg. Warranty