This Logitech trackball mouse is a reliable and durable input device for your computer. With its beige color and mechanical roller ball tracking method, it is perfect for any desk setup. The mouse has two buttons and connects via PS/2 port. Additionally, the Logitech M/N: M-S34 model is known for its smooth and precise movement. It is great for long hours of work and browsing. The trackball mouse is compatible with various computers and operating systems.