From: jj4public@vfemail.net   
      
   On Thu, 7 Dec 2017 14:30:05 -0800 (PST), kempalab@gmail.com wrote:   
   >   
   > Did you ever figure this out? I am trying to do something similar, and I   
   > can disable the USB camera for the microscope but the light isn't going   
   > out.   
      
   Try using power management to control the USB device. Note: some USB devices   
   support full power management, partial (e.g. no power off, only low power   
   mode), or none at all. e.g. USB input devices such as keyboard and mouse,   
   can't be powered off. Some may have no support at all in order to make them   
   cheaper for consumers.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)