Patent ID: 7219240

Claim:
A monitor for controlling power of a host computer having a processing device, said monitor comprising: a switch device for changing a status thereof in response to an external force applied thereto; a monitoring device electrically connected to said switch device for monitoring a change of said status of said switch device, and determining if a power management event is activated by the change of said status of said switch device; and a transmission device electrically connected to said monitoring device, and transmitting a power management signal to said host computer according to a determination that said change of said status of said switch device activates a power management event, such that said processing device performs a power-on or a power-off operation on said host computer; wherein said transmission device comprises a first USB controller for receiving said power management signal and a USB client driver for being downloaded into said first USB controller when said power management signal is received by said first USB controller, and driving said first USB controller to transmit said power management signal to said host computer.