Microsoft Wireless Desktop 9000 Keyboard And Mouse (Black) This sleek desktop is contemporary and minimalistic. It has quiet-touch keys for a serene typing experience and a full-size mouse that provides comfortable precise navigation. The Wireless Desktop 900 also includes Advanced Encryption Standard (AES) which is designed to help protect your information by encrypting your keystrokes. Both the keyboard and the mouse have an average battery life of 2-years and provide easy access to commonly used Windows features to keep you productive and efficient.