Did your USB hub come with an optional wall adapter? If so it's probably a powered USB hub when the wall adapter is plugged in. If it didn't come with one you may find a power connector on it that you could plug a wall adapter into ( ofcourse one that matches the voltage & polarity hopefully specified on the jack!). This might make it powered too... I didn't try my 485B on a hub last year so I can't comment on how well it works through a hub.