Place your hands and arms naturally and comfortably with the Microsoft Natural Ergonomic Keyboard 4000. The improved split design encourages a more natural hand, wrist, and forearm position and its new curved key layout makes keys easier to reach. The Zoom Slider lets you zoom in for close-ups of Web pages, images, and more - with just the touch of a finger. And 5 customizable My Favorites keys give you instant access to the folders, files, and Web pages you use most.