System for distributing electrical power to electrical outlets of a passenger vehicle

The system (56) has a power source (4) to deliver electric current, and distribution units (66) equipped with universal serial bus (USB) ports. A common power converter (60) has an input (62) connected to the power source in order to convert the current and outputs (64) connected to all units in order to transmit the converted electric current to the ports. Each distribution unit additionally comprises a secondary power converter (68) whose input (69) is connected to one of the outputs of the common power converter and output (70) is connected to one of the ports.