SIIG’s Wireless Mini Multimedia Trackball Keyboard is a mini-sized multimedia keyboard designed to offer the comfort and convenience of wireless connectivity. The trackball with three button mouse function offers left click, right click and scroll features. The keyboard is ergonomically designed for easy operation. The Wireless Mini Multimedia Trackball Keyboard is easy to setup, it uses built-in Windows drivers so no additional driver installation is needed. Simply connect the USB receiver to an available USB port and experience the high level of comfort and convenience this wireless keyboard brings to you.