Microsoft Black Wireless Keyboard 850

* Advanced Encryption Standard (AES) 128-Bit Encryption This keyboard features Advanced Encryption Standard (AES*) technology, which is designed to help protect your information by encrypting your keystrokes. Each keyboard is permanently paired with its receiver at the factory—no key information is ever shared over the air. * Windows Shortcut Keys Quickly access frequently used tools, like the calculator, zoom and audio controls by using shortcut keys. * Media Keys For Music And Video Control Effortlessly control your music, with next track, previous track, play, pause, and volume control keys. * Battery Status Indicator Lets you know when your batteries are running low. * Reliable Wireless Connection Enjoy the 2.4-gigahertz (GHz) wireless technology, which delivers a reliable connection with up to a 15-foot range, with virtually no interference. * Longer Battery Life Experience fewer interruptions with up to 15 months of battery life for your keyboard. * Limited Functionality Mac OS 10.10, Mac OS 10.9, Ma...