The utility model discloses a computer management is with preventing tearing open ware, including the mounting of " L " shape, wherein the mounting comprises diaphragm and riser, wherein installs first copper contact and second copper contact respectively on the inner wall of diaphragm and riser, on the inner wall of diaphragm and riser all the laminating have and glue, the utility model discloses when using, when detacing the mounting through external force, first copper contact and second copper contact present switching -off state, bee calling organ switch on at this moment to bee calling organ reports to the police, and managers can realize fining very fast like this, thus the condition of avoiding device element to lose, simple structure, convenient assembling.