Locate the single pin holding the negative and positive wires to the motherboard. Each lead should have one pin holding each wire to the green side of the motherboard.

Using a soldering iron, melt the existing solder point for the red lead (positive line).

Using a soldering iron, melt the existing solder point for the black lead (negative line).

Pull the red and black leads through their respective holes, out of the motherboard.

Check out our How to Solder and Desolder Connections guide if you are unfamiliar with soldering practices.