A-Tech 8GB Module for HP 15-bs091ms Compatible DDR4 2133MHz PC4-17000 Non-ECC SODIMM 1.2V - Single Laptop & Notebook Memory RAM Stick (ATMS397715A34065X1) at Amazon.com
CMS 8GB (2X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Compatible with HP/Compaq Workstation Z400 Workstation for Server Only - B80 at Amazon.com