Upgrade your setup with a 24ghz usb wireless optical mouser available in black red blue and greyr suitable for use with all windows computersr runs on 2x aaa batteries not includedr just plug and play no drivers necessaryr auto sleep mode protects against energy wasteager high definition trackers ensure precision controlr supplied with usb dongler save 75 on the usb wireless optical mouse at 499 pound instead of 1999 pound