Truly universal locking Take the guess work out of securing your notebook, display, dock, and accessories with the removable, interchangeable heads of the HP Sure Key Cable Lock.[1] * It’s easier than ever to secure your multi-platform notebook and tablet fleet with one lock that works with the most common industry-standard lock slots.[1] * Deter tech theft by attaching the correct lock head to the 6 ft (1.83 m) galvanized steel cable and wrapping it around any fixed object. Insert the lock into your notebook, dock or tablet’s lock slot[1], and push the lock to secure.