SIENOC Laptop Notebook PC Computer Security Lock Chain Cable Anti-theft Color Silver Length: approx. 3.6 feet;Hardware Platform: PC; 4 digit password protection;Easy to install and use to protect high security computer devices The product is also suitable for a traveling bag. How to change the password? 1. Select the correct password (Default password: 0000). 2. Press and hold the reset button (Not Switch button,in side of the password). 3. Change your Password,then release the reset button. Make sure you note your password carefully and check that the lock functions correctly. Length: approx. 3.6 feet;Hardware Platform: PC; 4 digit password protection;Easy to install and use to protect high security computer devices The product is also suitable for a traveling bag.