The special feature of this security cable are the three included lockheads. They can be changed by simply plugging them on and are exchangeable as required. The three most common lock variants Kensington slot (3 x 7 mm), Noble Wedge slot (3.2 x 4.5 mm) and Nano slot (2.5 x 6 mm) can be secured with this security cable. Because of the small design of the lock, this security cable is ideal for slim netbooks.Due to the special mechanism of the laptop lock, it is possible to lock up without a key. The appropriate key is only needed for unlocking.System requirements Security lock on the devicePackage content Laptop security lock 2 x keys 3 x lockhead User manualPackage Retail Box