[python-win32] USB Power Off from Python

James Matthews nytrokiss at gmail.com
Thu Dec 14 03:48:12 CET 2006

However we see that you can unmount it ans sometimes it will be turned

On 12/13/06, Tim Roberts <timr at probo.com> wrote:
> Sajjad Hussain wrote:
> > I am using a USB port to power my USB device that
> > takes 5V DC power. My device works fine and is powered
> > on properly. I am using small script written in python
> > to open a port (I am using a serial to usb adapter
> > since my device has a serial connector on it), and
> > send some data.
> >
> > Now I just want to turn off my device. Basically
> > cutoff 5V usb power to my device. That means turn off
> > power to a particular usb port where my device is
> > connected to. And later say after 5 minutes I want to
> > turn the power back on. I am using Windows XP. Please
> > let me know how I can do that.
> You can't.  There is no mechanism in the Windows USB driver stack to
> perform this task.  Not even a USB kernel driver can do this.
> --
> Tim Roberts, timr at probo.com
> Providenza & Boekelheide, Inc.
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