HP ProOne 400 G1 Maintenance & Service Manual page 67

6. Disconnect the cable from the power button board (1), and then remove the Torx screw (2) that
secures the bracket to the computer.
7.
To remove the board from the bracket, remove the two Phillips screws that secure the board to the
bracket.
8. Remove the power button board from the bracket.
To install the power button board, reverse the removal procedures.
Power button board
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