Hello, I currently have a router on my living room but the signal is not strong enough to reach my bedroom. Can I pass an ethrernet cable underground from my router and use one of these ( https://www.amazon.co.uk/TP-Link-Wireless-Router-Button-TL-WR841N/dp/B001FWYGJS/ref=sr_1_2?ie=UTF8&qid=1499604262&sr=8-2&keywords=ethernet+switch+with+wifi ) to increase the wifi range and even make any wired connections?