Hynix 8GB PC4-21300 DDR4-2666MHz 260-Pin SODIMM 1.2V Single Rank Memory Module HMA81GS6CJR8N-VK at Amazon.com
A-Tech 16GB Kit (2 x 8GB) for HP Z640 Workstation - DDR4 PC4-21300 2666Mhz ECC Registered RDIMM 1Rx8 - Server Specific Memory Ram (AT378361SRV-X2R3) at Amazon.com
SK Hynix 8GB DDR4 1Rx8 PC4-2400T HMA81GS6AFR8N-UH SO-DIMM Laptop RAM Memory at Amazon.com
SK hynix 64GB/4Gx4 DDR4 2666MHz ECC/REG Load Reduced CL 19 Server Memory HMAA8GL7AMR4N-VK at Amazon.com
Adamanta 8GB (1x8GB) HP Certified Hynix Laptop Memory Upgrade Compatible for HP Omen 17 DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v RAM DRAM at Amazon.com