Ergonomic Keyboard 4000 for Business Split ergonomic design encourages natural hand, wrist, and forearm positions Cushioned palm rest provides support and promotes a neutral wrist position Palm lift promotes a relaxed, natural angle for your wrist Media keys for music and video control Type in total comfort with the split ergonomic design of the Natural Ergonomic Keyboard 4000, which encourages natural hand, wrist and forearm positioning.