Specs: 4GB 288-Pin DDR4-2666 PC4-21300 ECC Unbuffered 2666MHz 1.2 volt

DDR4 EC* Compatible with Qnap Models: TS-983XU TS-983XU-RP TS-883XU TS-883XU-RP TS-1283XU-RP TS-1683XU-RP TS-2483XU-RP TS-1886XU-RP TS-h686 TS-h886 TNS-h1083X Lifetime Replacement Warranty Included Please contact us for any compatibility questions Made from the highest quality components, Arch Memory RAM modules are designed to increase productivity and help your NAS work faster. Arch Memory products are engineered to meet industry standard specifications and rigorously tested to ensure quality. Backed by free technical support, a lifetime replacement warranty and legendary reliability, Arch Memory RAM is your best choice for upgrading your Network Attached Storage.

30 Day money back guarantee. Limited lifetime warranty.