Secures USB Type A ports against unauthorized access Quick and easy handling Single key Port locks sold separately 2 year warranty, more about warranty conditions here With the Lindy USB Type A port lock, open USB Type A ports can be blocked quickly, so that it is not possible to connect cables or other USB devices unauthorized. Place the lock on the key and then insert the lock into the USB port where it automatically locks. To unlock, insert the key into the lock, then it can be easily removed. With this tool, system administrators can prevent USB sticks, smartphones or USB storage media from being connected and data from being copied unauthorised or viruses being injected. Please note that the key only fits the lock in the same colour.