Abstract: A security system and method for a plug-and-play (PnP). The security system includes a server, a network system and a client. The server distributes a monitor program on the client via a remote control agent in advance, and transmits a lock or unlock message to the client through the network system. The client receives the message from the server, and locks or unlocks the PnP device by the monitor program via a disk I/O API.

Abstract: A monitoring method and apparatus applied to a computer system having a computer case, a controller and a register for changing the power state of the computer system according to the assembling state of the computer case is disclosed. The method comprises steps of detecting whether the computer case of the computer system is disassembled, generating a trigger signal to the controller when the computer case of the computer system is disassembled, generating a power management signal in response to the trigger signal for changing a system power state indicator of the register, and polling the system power state indicator and driving the computer system into a hibernation mode according to the change of the system power state indicator.

Abstract: A security system and method for a plug-and-play (PnP). The security system includes a server, a network system and a client. The server distributes a monitor program on the client via a remote control agent in advance, and transmits a lock or unlock message to the client through the network system. The client receives the message from the server, and locks or unlocks the PnP device by the monitor program via a disk I/O API.