This Forward Notebook Standard Security Combination Slot  Lock is designed to keep your laptop safe from theft‎.‎ The lock features a 4‎-digit resettable combination ‎(‎up to 9999  combinations‎)‎‎.‎ It is made from sturdy and durable alloy with nickel finish‎.‎This forward lock is used to secure your laptop and prevent theft‎.‎ You can attach it to the security slot in the rear  corner of your laptop and get it affixed to a large‎,‎ unmovable object‎.‎ If you get into the habit of using security locks‎,‎ you won‎'‎t need to worry about losing your valuable laptop‎,‎ even when leaving it unattendedProtect your PC or Laptop device from theft ‎- for laptops with built‎-in security slots4‎-digit resettable combination for user ‎(‎up to 9999 combinations‎)‎Push‎-to‎-lock functionSecurely attach your computer to a non‎-movable object Step one‎:‎ Set Code‎(‎If you do not want to change your password‎,‎ you do not have to set a new code‎.‎ Your code will be 0000‎.‎ If you would like to set a new code‎,‎ please follow the directions below‎)‎a‎.‎ Starting from the initial code ‎(‎0000‎)‎‎,‎ keep the round button on the side of the lock pushed in during the new code set ‎(‎you can use a pen to keep the button pushed in‎)‎‎.‎b‎.‎ Turn each dial to select your new code‎.‎ Once the new code is chosen‎,‎ release the round button on the side to set the code‎.‎c‎.‎ Click the top release button ‎(‎rectangular button‎)‎ to ensure that the lock unlocks and the correct code is set‎.‎If you want to change your code‎,‎ repeat the above operations‎.‎Note‎:‎ Be sure to remember the code‎.‎ If you forget your code‎,‎ there is no way to open the lock‎,‎ and the lock can only be scrapped‎.‎Step two‎:‎ Lock the Notebooka‎.‎ Let the lock rope surround the fixed objects and make sure the lock rope is through the grommet‎.‎b‎.‎ Then press on the release button to insert the lock into thekeyhole of the notebook ‎(‎the keyhole is usually at a side of the computer‎,‎‎)‎c‎.‎ Release the button‎,‎ and it should now be locked‎.‎Step three‎:‎ Unlock the Notebooka‎.‎ Turn the dial to the code that you have selected‎.‎b‎.‎ Press the release button and pull the lock away‎.‎Length‎:‎ About  100CM