In one embodiment, the present invention is a power adapter for coupling electrical power from a standard North Atlantic Treaty Organization (NATO) power coupling to one or more electronic devices. In one embodiment, the power adapter includes a plug connector adapted for receiving electrical power from the power coupling, a receptacle adapted for providing the electrical power to a slave cable (e.g., an inter-vehicular slave cable), and at least one terminal adapted for providing the electrical power to the electronic devices (e.g., a computer system). The power adapter is thus capable of maximizing the potential of the power coupling to provide electrical power for multiple simultaneous uses.