This Logitech (Logi) T-BC21 trackball mouse is a great addition to any computer setup. The wired USB connectivity ensures a reliable connection, while the amofferextrous design allows for comfortable use by left or right-handed individuals. The gray color and sleek marble design give this mouse a modern and stylish look. The mouse is compatible with Windows and Mac operating systems. Get precise and smooth cursor control with this Logitech trackball mouse.