USB to USB communication?

[richard.pieri-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org (Richard Pieri)]

On Jan 20, 2010, at 4:03 PM, R. Luoma wrote:
> 
> Has anyone tried to hook up communications between
> two computers using the USB ports?

Short version: you can't.
Slightly longer version: you cannot have more than one root hub node on a bus chain.
Tangential answer: there was at one point in time a device for PS2 consoles so that you could connect a PS2 (root hub) to a PC (root hub) for save game transfers.  I don't know if it's still findable, and beyond that it would require some specific drivers to make work because the whole concept is alien to USB.

--Rich P.