An information handling system comprises a first bus system comprising a plurality of connection pins wherein at least one pin is unused, at least one control line for controlling or communication with devices of the system, a controllable coupling/de-coupling unit for coupling/de-coupling the control...http://www.google.com.hk/patents/US7111099?utm_source=gb-gplus-share專利 US7111099 - Information handling system with improved bus system
