DDR3 EC* Compatible with HP models: * Z400 * Z420 * Z620 * Z820 Certified for HP Memory 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 computer 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 computer's memory.
30 Day money back guarantee. Limited lifetime warranty. See Warranty Section for details.