In places where the signal is still strong enough to get a good signal, there could be a wifi? extender. These are little boxes that would sit on end tables, or stands, and designed to connect with that good signal wifi signal, and extend it further so a place with an otherwise weak signed will get a strong signal. For devices like NAS?s, there will be 2 RJ45-LAN? ports. You could also plug in anything else other than routers into the switch.