An interfacing device is disclosed which is comprised of a read-only memory (ROM) device, a power regulator, a plurality of specific ports, a link layer controller, a physical layer arbiter, a switching unit which switches the state of the power provided to the peripheral equipment through specific ports,...http://www.google.fr/patents/US6510485?utm_source=gb-gplus-shareBrevet US6510485 - Stabilizing circuit for interfacing device
