Turning on USB Host Power

Wondering if anyone has some insight into this.  I have a client with several ET1's and we need to have the USB Host Power setting turned ON to correct a scanner issue.  We have an APK that configures some settings on the device and looking to find out what the value would be for the USB Host Power setting.  Looking for something similar to below. 


android.provider.Settings.System.putInt(getContentResolver(), Settings.Global.WIFI_SLEEP_POLICY, 2);


Being that this isn't a standard Android setting and appears to be a custom setting in the ET1 build I'm not finding much info on this setting.  Please let me know if you have any ideas.