16GB DDR4-2666 ECC UnBuffered SO-Dimm module
16GB Module - DDR4 SO-DIMM - ECC - Unbuffered - PC4-21300 - 1.2V - 1 Year Depot Carry-In Mfg. Warranty
Intel Optane 3DXP 256GB DDR4 2666 1.2v Persistent Memory Module
256GB Module - DDR4 - ECC - Registered - 2666MT/s - Optane DDR4 2666 21300 - ( for Optane Supported \motherboards Only)