This Logitech T-BC21 wired USB trackball mouse is a great addition to your computer setup. With a maximum DPI of 300, this mouse offers precise and responsive tracking through its trackball feature. It also has four buttons and a side-to-side scrolling capability for added convenience. The mouse comes in a sleek gray color and is compatible with a variety of devices. Its ps/2 connector ensures a stable connection, making it ideal for everyday use. Get your hands on this Logitech trackball mouse today and experience the ease of navigation it brings to your computer.