Compare Microsoft Natural Ergonomic 4000 Keyboard (B2M00012) to Microsoft (D66-00077) Mouse

Natural Ergonomic Keyboard 4000 has been expertly crafted to allow you to work in a more natural position. The new Gull Wing design features a 14-degree gable, a natural arc and a curved key bed - bringing the keys closer to your fingers to reduce reach and unnecessary motion, while encouraging a more natural typing position. It also comes equipped with an optional palm lift for a seven-degree reverse slope and a cushioned wrist rest that encourages better arm and wrist alignment. Less

Get the reliability of optical technology for a low price. With a convenient scroll wheel and stylish, comfortable design, this high-performance mouse is great value. A unique IntelliEye optical sensor replaces the old-fashioned mechanical mouse ball and works on virtually any surface. With a convenient scroll wheel and comfortable design, Wheel Mouse Optical is a great value. Wheel Mouse Optical brings the precision and accuracy of IntelliEye optics to an affordable mouse. Move through documents quickly without clicking on the scroll bar. Accelerated scrolling reacts to how quickly you roll the wheel, saving you time and effort. The three buttons - including the wheel button - can be reprogrammed easily to perform popular commands with a single touch. Whether you control it with your right hand or your left, you'll appreciate the way Wheel Mouse Optical is shaped and styled for your comfort. Less