Manhattan USB 1.1 RightTrack Mouse - Orange (177696) Right Track Technology provides precise, accurate control Advanced optics Top-mount, push-button control instantly shifts resolution from 800 to 1,600 dpi Chipset: PAN3529 Standards: USB 1.1 Compatible with Windows XP/Vista/7 and Mac OS 10.0 and higher Control: Right and left mouse with scroll wheel (auto-scroll), page forward, page back, resolution adjustment DPI Resolution: User-adjustable 800/ 1200/ 1600DPI Resolution Scanning Speed: 30 lps