I have a cable modem that broadcasts wireless signal. I am not getting enough out of my range extender. I would like to connect with an Ethernet cable ran through the attic to the other end of the house. Will this work? The range extender has an Ethernet port. Made by amped wireless. If this is not possible with the wireless range extender is there a product that would work for this type of set up? Are these plug and go or do they need to be configured?