AOpen PS/2 USB Optical Mouse Performance plus comfort! Superb ergonomic design for easy handling and stress-free operation. AOpen’s durable, precision-engineered PS/2 three-button mouse offers easy scrolling, outstanding track life and smooth sailing across a variety of surfaces. This extraordinary 3D optical mouse is compatible with Windows XP/2000/NT/Me/98 and 95 operating systems. Housed in a simple but elegant chassis, your AOpen PS/2 three-button mouse will give you years of reliable service. Now available at our everyday low pricing! Logitech Optical Mouse No ball. No cleaning. Incredibly smooth tracking. And you don’t even need a mouse pad. The Logitech Optical Mouse is based upon an optical system, making it a better design than other scrolling input devices. This use of optical technology provides smooth, accurate scrolling, without the need for a mouse pad (though it couldn’t hurt!). Because the Logitech Optical Mouse connects via USB and is designed for immediate plug-and-play connectivity, there are no software drivers to download or install. Just connect the Logitech Optical Mouse to any USB port, and you’re ready to browse the web, scroll through documents, etc. Trust Logitech for quality, reliable Input Devices—get the Optical Scroll Mouse for your PC.