1. When the screen enters the calculator interface, the numeric keys on the keypad cannot be used for input and are only functional for calculations. Press FN + the upright Enter key to exit the calculator interface.
2.adjust the screen time on the driver based on the time on your computer
3. FN+del key to switch the screen interface in order.
4.Press FN+cal( the key is to the right of del key) to wake up/close the screen. If the screen was taken out, it will not wake up automatically, you can press FN+cal twice or replug the cable or turn the power switch off and on again.