Crucial DDR4-2666 SODIMM 1.2V CL19 8GB (1x8GB) RAM DDR4 2666MHz 

Kingston Server Premier 8 GB 2666MHz DDR4 ECC Reg CL19 DIMM 1Rx8 Server Memory

Samsung 16GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 2Rx8 Dual Rank 1.2V

RAM 16GB 2x8GB Black Owl 2666 MHz CL19 1.2V 288-Pin Desktop UDIMM MD4U082619BJDA