Adesso iMouse S4 - Tangle-Free Retractable Mouse The USB Cable is retractable, making tangling of wires a thing of the past. Near the bottom of the mouse is a USB Cable Compartment, allowing you to store the cable and protect it from fraying when not in use. With a 800/1200/1600 DPI adjustable switch, you can navigate quickly and easily on most of surface with better speed, accuracy, and reliability.