2pcs of 16GB DDR4, 2666MHz, Non-ECC, CL19, X8, 1.2V, Unbuffered, SODIMM, 260-pin Lifetime exchange or repair warranty against manufacturing defects. Manufactured by Computer Memory Solutions 30 DAY MONEY BACK GUARANTEE We don't use OEM or Generic Modules to avoid incompatibility Compatible with Dell Latitude 14 (5491) Vostro 15 (7580), XPS 15 (9570) max memory 32gb sockets 2