4PCS OF 16GB DDR4, 2400MHz, Non-ECC, CL17, X8, 1.2V, Unbuffered, DIMM, 288-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. Max Memory: 64GB Sockets: 4 Compatible with: ASRock - Fatal1ty Z170 Gaming K4, Z170 Gaming K6, Z170 Gaming K6+, Z270 Gaming K4, Z270 Gaming K6, Z270 Professional Gaming i7