Universal laptop lock 221 keyed can lock all laptops . How to Use a Keyed Laptop LockLoop the Cable: Wrap the looped end of the steel cable around a secure, heavy fixture like a table leg.Insert the Lock: Push the metal lock head into the security slot (K-Slot, Noble Wedge, or Nano slot depending on your laptop model).Turn the Key: Turn the key 221 to engage the locking mechanism, then pull the key out to secure