The ComboSaver lock head features the patented T-bar locking mechanism. The T-bar provides a tight fit with the Kensington Security Slot. A rubber bumper ensures a snug fit between the lock and the security slot and protects your hardware. All laptop locks are not the same; locks differ based on lock technology used, the ease of use and the level of security provided. ComboSaver locks are built to exacting engineering standards. Kensington combination locks provide 10,000 possible combinations. A reset key is conveniently tethered to the cable so its there when you want to use it. Special attention has also been made to ensure that the combination dials are easy to read, positioned for ease of use and durable. Register your 4 digit combination code with us online. With the help of your password, you will be able to recall your stored combination code. Just remember to update your code registration should you ever reset your combination code! Our business is protecting yo.