The Gigabyte GK-KM7580 2.4Ghz Wireless Multimedia Keyboard & Mouse is packed with features. USB Nano receiver included, adjustable DPI - 500-1000, 15 Hot Keys, Spill-resistant Design, Laser Engraved Key Cap and Optical Sensor. Supports: Windows 98/2000/ME/XP 32bit/Vista/Windows 7.