Kimtigo DDR4 16GB Laptop Dram 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook (SODIMM) RAM Non-ECC Unbuffered Single Rank 260 Pin PC Computer Memory Module Upgrade at Amazon.com
Source SAICHI High Performance Memory Ram Ddr4 16gb Computer Ram Notebook Memory Ram Ddr4 16gb 3200mhz on m.alibaba.com
Kingston 16GB (1 x 16GB) DDR4 2400MHz DRAM (Notebook Memory) 1.2V SODIMM (260-Pin) KCP424SD8/16 Laptop Memory - Newegg.com