This may be what he is getting at:
http://www.misco.co.uk/productinform...~WW~/index.htm
BELKIN 4X4 USB PERIPHERAL AUTO SWITCH
The Belkin 4x4 USB Peripheral Switch (the Switch) lets you access four USB
devices - such as printers, cameras, scanners, and external hard drives -
from up to four computers simultaneously. This convenient design gives you
immediate access to your USB devices through both a push button and through
an easy-to-use Switch software. It keeps all your devices available without
your having to detach and reconnect them from one computer to another, and
gives you the option of using them all from a single computer or assigning
each device to any of the connected computers. Based on USB Plug-and-Play
technology, the Switch makes managing your systems simpler and easier than
ever. The Switch features LEDs to indicate which port is being accessed by
which computer, as well as connection status alerts to prevent accidental
switching of a USB device during data transfers. When printing to a USB
1.1-compliant printer, the Switch automatically switches the printer to the
appropriate computer.
Personally I would use a router to do the job.
Phill H