Uses available USB Port. Providing the high-end graphics & pixel-point control that allowing us to work quickly and efficiently. Built-in Touch-Pad for Pointing input device. Glide your finger to move the cursor. No contact force is required. Use the buttons like mouse buttons. Tracking speed up to 40 inches per second. Elegant Wrist-Rest for a comfortable support and rest. Easy Internet key as shortcut to your E-world.