Most of the new routers I've seen have (2) usb ports. What are they for?
New Cisco routers and switches have also usb ports for console access :
You can see here two usb ports. On the left is a usb-host port, which is used like Mark said for flash drives or strong auth, and on the right, in the blue square is a usb slave port, which will appear to the computer as a usb to serial device.