On Wed, Jun 3, 2009 at 2:52 PM, Youda He <youda@geometrysystems.com> wrote:
>> http://www.gniibe.org/ac-power-by-usb/ac-power-control.html
>
> Thanks! I think the controlling of USB hub is excellent idea, this way I =
can
> have control of =A0connect/disconnect of USB device easily. Any one have =
used
> the USB extension cable? the active USB with a one to one hub to extend t=
he
> USB to 5M, if I can find a way to turn on/off the cable, then I am all se=
t.
>

>From the above web page, Linux specific:

Using lsusb utilities with -v option, you can inspect 'Hub
Descriptor', such like:

   Hub Descriptor:
   [...]
     wHubCharacteristic 0x0089
       Per-port power switching
       Per-port overcurrent protection
       Port indicators
   [...]

I'm sure there is a way to inspect that info in Windows, as long as it
has the 'Per-port power switching' bit set, you should be able to do
it.

Unfortunately, you'll have to buy a cable to find out. :)

-- =

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