Using HomePlug AV technology, the D-Link PowerLine AV 4-Port Switch instantly transforms your home’s existing electrical wiring into a high-speed network. Simply plug the PowerLine AV 4-Port Switch (DHP-346AV) into an outlet in a different room to get a network connection. The PowerLine AV 4-Port Switch features port-based quality of service (QoS) for smooth video streaming and lag-free gaming.