An input/output (“I/O”) system includes a plurality of input/output (“I/O”) ports, measurement circuitry, and an I/O multiplexer bus. The measurement circuitry is coupled to measure one or more electrical properties of one or more devices to be externally coupled to one or more of the I/O ports....http://www.google.fr/patents/US8067948?utm_source=gb-gplus-shareBrevet US8067948 - Input/output multiplexer bus
