IOGEAR's GKM571R is the latest ergonomic palm-sized mini wireless 2.4 GHz wireless keyboard with built-in optical trackball, left and right click buttons and scroll wheel with LED backlight technology for the evolving digital living room. The wireless keyboard with built-in optical trackball allows you to work up to 33 feet away from your home theater living space to control and navigate your home theater computer/laptop and or video game console like never before. The intuitive wireless interaction changes the way you get and drive your multimedia and entertainment contentIn addition to its creative palm-size design it uses the latest LED backlight technology which automatically turns on and off when opening the keyboards stylized protective cover lets you see what you're typing and makes typing in low light or dark rooms effortless and convenient. It also incorporates 19 hotkeys for quick access to multimedia and Microsoft Media Center features and the ability to customize the trackball speed from 400 dpi, 800 dpi or at an amazing 1200 dpi.No driver needed, just plug in the included USB RF Receiver and you're ready to go. Great for PC to TV applicationsHTPC (Home Theater PC) Media Server/Computer/Laptop setups MCE (Windows Media Center) applicationsLatest game consoles such as, PS3 and XBOXIt's the ideal solution for the home entertainment living room and computer enthusiast looking to compliment their PC to TV solution also a perfect solution for meeting room presentation needs.