HP EA177A6 Mouse
The HP USB Optical Scroll Mouse is a two button mouse with scroll wheel that provides the speed and accuracy of optical tracking in a simple, elegant design. It records motion precisely on a variety of surfaces using the latest optical sensing technology. The HP USB Optical Scroll Mouse has no ball or moving parts, which improves its durability, makes it require less cleaning, and eliminates sticking. The mouse's comfortable, contoured shape fits either hand.