Protection device for expansion device of portable computer

摘要

A protection device is disposed between the socket entrance of the expansion socket of the expansion device and the casing of a portable computer. The casing is formed with a window corresponding to the socket entrance. In an unprotected state, the expansion device functions in a normal manner. However, in a protected state, the protection device shields the socket entrance of the expansion socket and prevents an external article from being inserted into or withdrawn from the expansion socket.