I'm particularly interested in Asus RT-N66U, but the question I have is quite general. Routers typically have indicator lights, which can be useful when someone is looking at them. But routers typically have neither a bell nor a speaker to get a human's attention. But there's a USB port. Hm. So, suppose I want to connect a speaker to the router's USB port and use it as an alert bell. Has anyone done something like that?