code: public static void updateDeviceList() throws SecurityException, UsbException
  	{
  		((org.usb4java.javax.Services) UsbHostManager.getUsbServices()).scan();
  	}
docs: Scans for USB device connection changes, so subsequent traversals provide an updated view of attached USB
  interfaces.
  
  @throws SecurityException on restricted access to USB services indicated as security violation
  @throws UsbException on error with USB services