A-Tech 8GB Memory RAM for Dell Latitude 3400 - DDR4 2666MHz PC4-21300 Non ECC SO-DIMM 1Rx8 1.2V - Single Laptop & Notebook Upgrade Module (Replacement for SNPHYXPXC/8G) at Amazon.com
G.Skill Trident Z 3400MHz CL16 16GB DDR4 Review | KitGuru
A-Tech 8GB Memory RAM for Dell Latitude 3400 - DDR4 2666MHz PC4-21300 Non ECC SO-DIMM 1Rx8 1.2V - Single Laptop & Notebook Upgrade Module (Replacement for SNPHYXPXC/8G) at Amazon.com