Strip the other end of the red/black wires and screw them into the terminal blocks as indicated. Note that red wire goes to the positive (+) terminal and black to the negative (-).

Insert three M3x10 screws in the marked holes and fasten them with one M3 nut each.

Place the PCB over the screws so that the power wire runs behind the PCB. Make sure that the wire does not stick out from the edge of the wood where it could get caught and pulled by an outside force

Secure the PCB with three M3 nuts.

Make sure the USB Power/Stand alone jumper is set to "stand alone"