Notebook security locks provide a front line of protection against computer theft. By taking the simple step of using a notebook lock, owners can discourage thieves at the office, at hotels and even at the airport. These devices usually consist of a key or combination lock that attaches a high strength cable to a computer after anchoring the other end to a pillar or desk. Some notebook security locks connect to built-in security sockets on a computer. Users with computers that do not have these built-in sockets can still use security cables that lock to other ports on the computer.