The Targus DEFCON 1 Retractable Cable Lock for Notebooks is designed to secure a notebook on the go and also has the ability to lock sporting equipment and other personal belongings. Perfect for students or travelers, the DEFCON 1 includes a lock slot adapter, making it easy to secure your notebook to a stationary item in dorm rooms, libraries and hotel rooms. For added security, the lock features a 4-digit user-resettable combination with 10,000 different combinations possible. The combination can be reset by the user at anytime to help avoid a security breach. The lock slot adapter is easily stored inside of the retractable lock's casing for maximum portability. The lock is compact and lightweight and can also help deter the theft of backpacks, snowboards and other personal belongings in areas that are crowded and potentially less secure.