A method, system, and computer program for updating a reference voltage for a interface chip to a component of a data processing system is provided. In one embodiment, a service processor reads the voltage requirements from a vital product data (VPD) module for each component within the data processing...http://www.google.com.tw/patents/US6769069?utm_source=gb-gplus-share專利 US6769069 - Service processor control of module I / O voltage level
