Lift the black plastic flap attached to the data cable retainer and rotate it away from motherboard.

Pull the data cable out of its socket.

The data cable socket is very fragile. Do not lift the connector upward as you disconnect it, as the socket may break off the motherboard. Pull the cable parallel to the face of the motherboard.

Remove three torx screws holding the motherboard

Lift the motherboard up and away from the base unit.