Tested and working. The Adesso Desktop Optical Trackball Ergonomic Mouse USB Corded iMouse T1 is a versatile mouse designed for comfort and efficiency. With a maximum DPI of 800, this wired mouse allows for precise tracking and side-to-side scrolling. The ergonomic design and optical tracking method make it easy to use for long periods of time. The sleek silver-gray-black color adds a modern touch to any workspace, while the four buttons ensure easy navigation. Whether you're a gamer, professional, or just looking for a reliable mouse, the Adesso trackball mouse is a solid choice.