Will the airport express printer port accept a USB hub? i want to put 2 printers on it and a scanner. can i use a USB hub. if it can be done, do i need to use a powered hub or can i get by with the cheapie since the devices shouldn't need power like a mouse, camera, etc. if this is going to require buying an extreme base station and a couple more express modules, i can swap cables instead of spending a bunch of money. i already had a printer and a scanner, but a free printer with my new macbooks was hard to turn down. and i can always use an alternate printer.