This Microsoft XBox360 WiFi/Wireless Controller + Adapter for Windows is brand new/unused in open box. This accessory package let you use any XBox 360 Wireless Controller with your PC. Many people consider the XBox 360 controller one of the best in features, comfort and ease of use, and design. The XBox 360 controller also works best for many newer PC games since these games often have a 360 console counterpart, i.e. Bioshock, Bionic Commando, etc., and many newer Windows Live and "Designed for Windows" games often develop with Microsoft's XBox 360 controller and interface in mind.