DDR4 ECR* Compatible with HP models: * Z440 * Z640 * Z840 Servers Arch Computer LLC Arch Memory are a Women-Owned Small Business and a Registered Small Business. Made from the highest quality components, OEM Memory modules are designed to increase productivity and help your computer work faster. OEM Memory products are engineered to exceed industry standard specifications and rigorously tested to ensure quality. Backed by free technical support, a lifetime replacement warranty and legendary reliability, OEM 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.