Ordinary keyboards have a numeric keypad where the mouse should be, forcing you to stretch outward to reach the mouse. The Evoluent mouse friendly keyboard has a numeric keypad on the left, allowing your mouse to be directly in front of your shoulder. This means that your arm is in a relaxed, neutral position when using the mouse. It also reduces the need to continually remove your hand from the mouse, as your left hand can operate Enter, Del, Page Up, Page Down, arrows, and other keys on the numeric keypad. It has duplicate Page Up, Page Down, Home, End, Del and arrow keys on the right for ease of use.