The tl wa850re39s single ethernet port allows the extender to function as a wireless adapter to connect wired devices like blu ray players gaming consoles dvrs and internet tvs at the same time the device can share the wireless network as well signal lights represent the current signal strength that tl wa850re receives from existing router which can help to find the right location to place the range extender so that the tl wa850re can achieve the best possible range and performance of the netw