2pcs of 4GB 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: Lenovo ThinkCentre M920 Tiny, ThinkCentre M920x Tiny, ThinkCentre M920z All-In-One; max memory 32gb sockets 2