MemoryMasters 16GB Kit (2 x 8GB) DDR4 2400 MHz PC4-19200 Sodimm Laptop Memory RAM Kit PC4-2400 260-Pin at Amazon.com
Hynix Original 64GB (4x16GB) Laptop Memory Upgrade Compatible for HP Zbook 15 G3 Mobile Workstation DDR4 2133Mhz PC4-17000 SODIMM 2Rx8 CL15 1.2v DRAM Notebook Adamanta at Amazon.com