shuting down power to a usb hid device

[Jim Mcduggan]

Is there a way to turn off power to a usb hid keyboard device thru software?


The wmi spec says that function is not implemented in the driver.


I don't mind if I have to reboot.
I don't mind if I can simply turn of the power the usb chip too.
I tried disabling every usb device and controller with devcon.exe, but that
did not shut off power to the device or the via ohci host controller..


Also when I shutdown the pc, the power to the hid device is still enabled.


tx
j

 

[Guest]

That just depends on your hardware. At least on some notebooks this
functionality is provided. On typical non-mobile devices its impossible.

But its pretty simple to develop a controlled hardware device that does so
(when plugged between computer and USB peripheral.

Regards,