100% SATISFACTION GUARANTEED - If there are any product problems , you can contact us by email or other way. We will do our best to answer your questions. Customer satisfaction is our aim. PASSWORD RESET INSTRUCTIONS - The original password of this lock is 0000. To unlock, enter the password and hold the square button. In the unlocked state, use a small tool (such as a small screwdriver or key) to press the round button at the bottom of the lock until it is fully pressed. Then, change the password as desired. Remember not to release the round button until the password change is complete, ensuring a secure and customized code. WIDE COMPATIBILITY - Compatible with all notebooks, desktops, and docking stations with built-in standard security locking slot holes, this lock offers wide compatibility. Its push-to-lock function allows for easy one-handed use, making it highly convenient for everyday use. STRONG STEEL WIRE ROPE - The plated steel cable, combined with the alloy steel lock body, provides outstanding fortitude and stability. This lock acts as an ideal theft deterrent, offering superior strength to resist tampering and ensure the safety of your valuables. KEYLESS LOCK - This cable lock features a 4-digit resettable function, allowing for up to 10,000 unique combinations. You can set your own code, providing maximum security without the need for keys. It's easy to remember and eliminates the risk of losing keys!.