The invention provides an electrical power supply for mounting to floor tracks adjacent an aircraft passenger cabin seat assembly, the seat assembly having at least one passenger seat supported on legs secured to the floor tracks, the electrical power supply including: a housing having an interior chamber and a base plate with floor track mounting fasteners; an electrical power supply unit within the chamber having an inlet connector for communication with an aircraft electrical power source; and at least one electrical power outlet mounted to an exterior surface of the housing and in communication with the electrical power supply unit.