Natural Ergonomic Keyboard 4000
The Microsoft Natural Keyboard has an ergonomic design, customizable keys, and PC and MAC compatible. Rest your wrists against the plush palm rest in a relaxed, natural angle with this keyboard’s curved key bed, ergonomic arc, and reversed slope. Apart from comfort and support, enjoy quick, customizable way to reach files, folders, and web pages with handy hot keys. For close-in tasks, use the Zoom Slider, located in the middle of the keyboard, to zoom in and out with the touch of a finger.
More information: http://www.microsoft.com/hardware/en-us/p/natural-ergonomic-keyboard-4000