Crucial DDR4 16GB(4 x 4GB) 2400MHz PC4-19200 1Rx8 1.2V Laptop Memory RAM LOT | eBay
Beware of the single rank x16 RAM kits sneaked in some laptop models! The 1Rx16 modules have significantly lower bandwidth compared to the 1Rx8 variants - NotebookCheck.net News
laptop - Can you have PC3L and PC3 RAM together? - Super User