The Powerline 500 AV Nano Adapter with Built-In Outlet, model TPL-407E, uses existing electrical lines to create a secure high speed network. Two adapters are needed to start a network. Connect one adapter to your router and plug another adapter into an outlet on your electrical system for instant high speed network access. The compact form factor saves space and offers an additional electrical outlet, built into the front of the housing to power computers and other devices. A noise filter maintains optimum connection speeds when devices such as computers, televisions, and gaming consoles create electrical background noise.