Patriot Viper Elite II DDR4 8GB(1 x 8GB) 2666MHz Single Memory Module at Amazon.com
HP S1 Single RAM 8GB DDR4 2666MHz CL19 Laptop Memory - 7EH98AA#ABC at Amazon .com
MMoment 8GB DDR4 2666MHz SODIMM (PC4-21300) 1.2V CL 19 Non-ECC Unbuffered 260 Pin (2Rx8/Dual Rank Base on 1Gx8) Notebook Laptop Memory Upgrade Module at Amazon.com
Kimtigo DDR4 2666 8G Laptop Dram 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook 1Rx8 Single Rank 260 Pin SODIMM Laptop PC Computer Memory RAM(8GB) at Amazon.com
SAMSUNG M471A1K43CB1-CTD 2666MHz Memory Modules (8GB, 1 x 8GB, DDR4, 2666 MHz, 260-Pin SO-DIMM, Black, Green) at Amazon.com