Scroll Mouse for HP Wire USB Optical Computer, 800 DPI MediaKey Specifications: Left-handed or right-handed (Brown Box) Description of the connector USBButtons A clickable scroll wheel and two main buttons Resolution of the sensor 800 DPI sensitivity The minimum measurements are 2.5 x 4.5 x 1.5 inches (W x D x H). 0.22-pound weight Black in color Overview of the product Utilizing the most recent advancements in optical sensing technology, the HP USB Optical Mouse