Microsoft Natural Ergo Keyboard 4000

Customizable hot keys: Perform common tasks, like opening documents and replying to email messages, with the touch of a button. Improved number pad: Quickly reach for commonly used symbols, such as equal sign, parentheses, and "Backspace." Ergonomic design: Type in total comfort—ergonomic design encourages natural wrist and arm alignment so you can work without discomfort.