- If there’s any abnormal or unwanted movement, the laser device automatically stops. If your computer shuts down or the USB cable is unplugged, the device will automatically stop without any delay. This prevents the machine from working if an accident occurs. If you don’t use the laser device for a while and it’s in a control state, it will automatically stop working. This feature preserves power and prevents unwanted accidents. If the computer enters sleep mode, the laser device automatically stops working.