1 piece of 4GB DDR3L-12800, 1600MHz, Non-ECC, CL11, 1R, X8, 1.35V, Unbuffered, SODIMM, 204-PIN. Lifetime exchange or repair warranty against manufacturing defects by Computer Memory Solutions. Manufactured by Computer Memory Solutions. We don't use OEM or Generic Modules to avoid incompatibility. *Intel Celeron N2840/Pentium dual core processors support a max of 4GB with on-board, non-upgradable memory. Intel Pentium/Bay Trail Quad-core processors support a max of 8GB with a single 4GB module and a 4GB on-board, non-upgradable memory.