etc-rc.local

# POWER SAVE USB DEVICES
usbconfig \
  | grep -v 'Logitech USB Receiver' \
  | awk '{print $1}' \
  | sed 's|ugen||'g \
  | tr -d : \
  | awk -F '.' '{print $1 " " $2 }' \
  | while read U A
    do
      usbconfig -u ${U} -a ${A} power_save 2> /dev/null
    done