4GB Total memory using 2pc of 2GB 1600MHz Module 240pin dimm NON ECC DDR3 12800. Lifetime warranty for exchange. BRAND Computer Memory Solutions We don't use Generic modules to avoid incompatibility issues. Guaranteed to work or you get all of your money back including shipping. MAX MEMORY 32GB SOCKETS 4 Features Compatible with ASRock Motherboard H97M, H97M Anniversary, H97M Pro4