Note: Do NOT remove the DC power jack to turn off the board, as it may cause damage.
The proper procedure to power down the board is as follows:
- Use software to gracefully power off (for example, in Linux, use the "poweroff" command).
- If unable to use software (for example, software has crashed or does not have a shut down command), press the power button for at least 15 seconds until the power LED (D3) turns off.
- If you need to remove the DC power jack:
- Follow above steps to gracefully power down the board.
- Disconnect AC power cord from the power brick.
- Wait several seconds until the DC LED (D41) turns off (the power brick discharges its voltage).
- Disconnect DC barrel of power brick from the board's DC jack.