VisionTek 1 x 16GB PC4-17000 DDR4 2133MHz 260-pin SODIMM Memory Module 900853 at Amazon.com
ADATA Premier 16GB Single DDR4 3200Mhz CL22 PC4-25600 260-Pin SODIMM Memory RAM Single (AD4S320016G22-SGN) at Amazon.com
Samsung M471A2K43BB1-CPB 16GB DDR4-2133 SO-DIMM Memory at Amazon.com
Hynix Original 16GB (1x16GB) Laptop Memory Upgrade Compatible for HP EliteBook 820 G3 DDR4 2133Mhz PC4-17000 SODIMM 2Rx8 CL15 1.2v DRAM Notebook Adamanta at Amazon.com