RUBAN 6 Feet Notebook Laptop Combination Lock PC Security Cable 4 Digit Password Metallic 6.2 Feet Noteguard Universal Notebook Security Cable. 4 dial combination lock Designed to secure most notebooks, projectors, LCDs and Plasma Screens. Works with nearly all notebooks, desktops, docking stations with built in standard security locking slot hole. All products come with a 18 months warranty against manufacturing defect. Easy to install and an idea theft deterrent.