Connected to the motherboard there will be a red, black, and grey wire.

Use a soldering iron to melt the soldered contact points.

Disconnect the wires.

Lift the motherboard up and out of the chassis.

The high temperatures of a soldering gun and melted solder may create the potential for burns. Inhaling the fumes in an enclosed environment may also lead to irritation and desensitization of the eyes and respiratory tract.