8GB (1X8GB) Memory for HP ProDesk 600 G4 Small Form Factor PC DDR4-2666MHz Non-ECC UDIMM RAM (PARTS-QUICK Brand) at Amazon.com
Amazon.com: CMS 16GB (1X16GB) DDR4 21300 2666MHZ Non ECC DIMM Memory Ram Compatible with HP/Compaq Pavilion 690-0020 Gaming Desktop PC, 690-0021nf Gaming Desktop PC - D25 : Video Games
A-Tech 64GB Kit (2 x 32GB) for HP ProLiant DL380 Gen10 G10 - DDR4 PC4-21300 2666Mhz ECC Load Reduced LRDIMM 2Rx4 - Server Specific Memory Ram (AT322622SRV-X2L1) at Amazon.com
Amazon.com: HP 8GB DDR4-2666 DIMM : Electrónica
parts-quick 8GB Memory Compatible with HP Z4 Workstation (G4) Xeon DDR4-2666 CAS-19-19-19 Registered DIMM RAM at Amazon.com
A-Tech 8GB Module for HP Omen 17-an120nr Compatible DDR4 2666MHz PC4-21300 Non-ECC SODIMM 1.2V - Single Laptop & Notebook Memory RAM Stick (ATMS397714A34073X1) at Amazon.com
Samsung Memory Bundle with 32GB (2 x 16GB) DDR4 PC4-21300 2666MHz Memory Compatible with HP ProLiant ML30 G9, ML30 G10, DL20 G9, DL20 G10, MicroServer G10 Servers at Amazon.com