I'm looking for a bit of advice, my school has a mobile classroom consisting of 16 Dell E5500 laptops and an apple airport extreme wireless hub.

Using the hub, a class can gain access to their work area and a materials folder on the network using their usual log on. This worked well in 2 classrooms on the ground floor of our building with only a few minor wobbles for around a year despite the hub only being designed to handle 2 or 3 devides on a local network. However last week, the hub failed and we cannot get anyone in the class to log on to the network using the laptops and with no other accomodation with PC's availiable for the class, it gives us quite a big problem.

Can anyone advise the best type of hub that would be able to handle the network traffic of 16 laptops?

Your help would be much appreciated