The power and data hub is a fan-less modular electronic system having a main housing member that forms a heat sink, which houses an electronic switch fabric backbone. The electronic switch fabric backbone connects multiple modular slots using a connection fabric backplane, which provides low voltage power input and command protocols. Cross-matrix switches are provided to interconnect stand-alone audio-visual, computer and other data, such as audio I/O, video I/O, and outputs via the integrated switch fabric backbone. Multifunction modular cards are provided and securely insert into modular slots disposed in the main housing unit. The system includes a control and DC power injector management unit for power control of connected units. Power management instructions can be issued to the main unit and modular cards. A network-based management utility controls, monitors and records operational parameters, and also stores and translates programmed instructions to the device.