Slim Portable Combination Lock for Standard Slot Self-coiling carbon steel cable is easily transportable and strong, stretching up to 1.8 m and shrinking down to 76 mm. Plastic sheathing protects surfaces. Won't block valuable ports, allowing for full use of the laptop while attached. Resettable four-wheel number code lets you choose from 10,000 possible combinations. Pivot and rotate cable head featuring one-handed operation allows for easy and flexible connection and movement. Register & Retrieve, Kensington's free online code registration program that allows for quick, secure and easy lookup if the combination is ever lost or forgotten.