@Markerrag -- There are some wireless servers that allow for file sharing by having USB ports so that hard drives can be plugged into them. That kind of thing is becoming more and more common. It makes sense to have an easy way for people in a home or small office to share files easily.
By the way, if you get a dedicated server or wireless router with USB ports, don't go cheap. You don't have to spend a whole lot to get something great, but don't get the least expensive thing you can find, either. You'll just wind up frustrated.
Fortunately, there are plenty of consumer guides that can help steer you toward the right setup and away from the wrong ones.