Keytronic Optical Scroll Wheel Mouse. Device interface: PS/2, Movement detection technology: Optical, Movement resolution: 800 DPI. Cable length: 1.5 m. Operating temperature range (T-T): 0 - 40 °C. Mouse dimensions (WxDxH): 121 x 63 x 44 mm, Mouse weight: 226 g. Packaging height: 44 mm, Packaging length: 140 mm, Packaging depth: 95 mm