HPE 64GB (1x64GB) Quad Rank x4 DDR4-2133 CAS-15-15-15 Load-reduced - 64 GB - 1 x 64 GB - DDR4 - 2133 MHz - 288-pin DIMM PC4-2133P-L - DDR4 - quad-rank x4 - 1.20V - CAS-15-15-15 - load reduced dual in-line memory module (LRDIMM)