1.[Sturdy] The unique lock creates the strongest connection between the lock head and the lock slot, which is used to ensure high security and anti-theft of computer equipment. The 6-foot long carbon steel cable can be cut and fixed to a table, countertop or any fixed structure. 2.[4-digit password] 4-digit password: resettable 4-wheel digital password with 10,000 possible combinations. You can easily reset this lock to any of the 10,000 combinations for more secure protection. 3.[Easy to install] One-handed button design, no other installation required, no need to change computers. Secure your laptop/notebook to any fixed object (such as table, pole, etc.) to prevent it from being stolen. 4.[Compatibility] Uses standard security slot, compatible with a variety of laptops and other devices. Suitable for all USB devices except USB3.0. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.