Systems and methods are disclosed for removing a power supply from a host unit running a computer program, without losing data or causing a cold boot. The present invention employs a retaining assembly for the power supply that delays removal of the power supply until shutting down of the computer program...http://www.google.com.tw/patents/US20070165480?utm_source=gb-gplus-share專利 US20070165480 - SYSTEMS AND METHODS FOR A CONTROLLABLE RELEASE OF POWER SUPPLY IN A MOBILE DEVICE