Abstract: A detachable anti-theft device is disclosed for securing a peripheral computer component to a fixed object. The device includes a connector having a jack that releasably mates with one of the available port plugs of the component. The connector receives a cable that attaches the connector to the fixed object and a locking mechanism keeps the connector jack securely engaged with the peripheral plug so that the component may not be separated from the fixed object. A preferred anti-rotation screw is further included to secure the connector to the plug.