What kind of USB device are you considering whose data can't be exported. i.e. why not export the FS on the USB flash drive? I have a feeling you're going for something else here, though. Perhaps USB audio or something without persistent storage. 

On Fri, Dec 4, 2009 at 2:43 PM, Tim Newsham <newsham@lava.net> wrote:
Does remote USB make sense?  Would it be possible to boot
up a plan9 system on one machine, export its usb device to
another machine and run usbd there and have the second machine
make use of any usb device attached to the first machine?
Would the latency be too high?

Tim Newsham | www.thenewsh.com/~newsham | thenewsh.blogspot.com