In message <mtuu0nvdp1p.fsf@contents-vnder-pressvre.mit.edu>, "Nathan J. Willia
ms" writes:
>"Steven M. Bellovin" <smb@cs.columbia.edu> writes:
>
>> I know that it's currently not possible to plug a USB 1.1 device into a 
>> 2.0 hub connected to a 2.0 port.  I have no idea why this should be; 
>> I'll just assume that's some side-effect of weirdness in the USB spec.
>
>USB 2 hubs are more complicated beasts, and we don't have code to
>program their transaction translators that take high-speed data from
>the host and feed it as full or low speed data to the devices (The
>description of how this works is fully 10% of the USB 2 spec).

I was silly enough to think it should be as tranparent as an Ethernet 
switch.  Thanks.
>
>> However...  If I were to plug a 1.1 hub into the machine's 2.0 ports, 
>> and then plug a 1.1 device into that hub, would it work?
>
>Yes. The controller will hand off that port to the USB 1 companion
>controller, and it'll all be a USB 1 universe.
>

Ah, good; that will make my life easier.

		--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb