Powerline Networking products make it possible to receive the current Internet network trough powerlines. Place an adapter to the router, connect it to an Ethernet cable and anywhere in the house where an adapter is plugged into the power outlet and an Ethernet cable connects eg. A PC. The PC will now get Internet through the power network. This is ideal as a replacement for an Ethernet cable that should be drawn throughout the house and should be connected with different switches in order to get everything connected.