I don't think that is possible, and that is exactly the problem. A drive
conforming to the USB standard announces its power requirements to the
host, which can then say "ok, go ahead" or "sorry, I can't supply that
much". A non-conforming drive just announces that it uses only so much
and then draws two or three times the announced value, possibly
crashing the host. There is no way to know that in advance.

And by the way, a powered USB hub does -not- guarantee that a
non-conforming drive will work. Too much is too much, and just like any
other USB host a hub is not obligated to supply more than the maximum
power specified in the standard. The only difference is that it would
not crash the Touch, it would just not work properly (which might be
even harder to diagnose).


-- 
usch
------------------------------------------------------------------------
usch's Profile: http://forums.slimdevices.com/member.php?userid=33389
View this thread: http://forums.slimdevices.com/showthread.php?t=78433

_______________________________________________
Touch mailing list
[email protected]
http://lists.slimdevices.com/mailman/listinfo/touch

Reply via email to