Adamanta 16GB (1x16GB) DDR4 2133Mhz (or 2400MHz or 2666MHz or 2933MHz or 3200MHz) PC4-17000 SODIMM 2Rx8 CL15 1.2v Non-ECC Unbuffered Notebook DRAM RAM at Amazon.com
Hynix Original 16GB (1x16GB) Laptop Memory Upgrade Compatible for HP Zbook 15u G4 Mobile Workstation DDR4 2133Mhz PC4-17000 SODIMM 2Rx8 CL15 1.2v DRAM Notebook Adamanta at Amazon.com
753221-B21 HP 16GB PC4-17000 DDR4-2133MHz ECC Registered