How To Use :
Combination setting button, press, hold, set your combination, then release button" (the original number is 0-0-0-0).
Open the lock again now you new personal code set.
Make sure you note your code carefully and check that the lock functions correctly.
If you want to change to a new combination ,repeat the above steps.

Attention :Please make sure your laptop supports security chain lock first. T-bar mechanism allows popular utilization to all products with built in standard security slot.