The Kensington Orbit Optical Trackball Mouse is a sleek silver mouse featuring a trackball design for easy navigation. With programmable buttons, ergonomic grip, and 4-way scrolling capabilities, this mouse offers a comfortable and efficient user experience. The optical tracking method ensures precise cursor movement, while the PS/2 and USB connectivity options provide flexibility in how you use it. The compact size and side-to-side scrolling make it a versatile choice for various computing tasks. Experience fast 2-day shipping and enjoy the reliability and performance of the Kensington brand.