Integral RAM 16GB DDR4 2666Mhz SODIMM Laptop Notebook MacBook Memory at Amazon.com
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
HyperX Fury Black 16GB 2666MHz DDR4 CL16 DIMM Single Stick HX426C16FB4/16 at Amazon.com