High quality, compact and portable. Used for charging quickly and conveniently. Work with Xbox 360 wireless accessories. Ideal for XBOX 360 wireless game pads, headphones and wireless racing wheels. Compatible with Windows 95, Windows 98, Windows 2000, Windows vista, Windows XP and Windows 7 and 64bit system. Input voltage: DC 4.7V/USB 5V. Output voltage: DC 2.6V. Rated power: 6W. NOTE: The wireless gaming receiver requires a powered USB 2.0 port to operate. If you're using the wireless gaming receiver with a USB hub, the USB hub must have an external power source.