The Microsoft Intellimouse Trackball X03-09209 Mouse is a vintage trackball mouse that is serial PS/2 compatible. It features a white color and an ergonomic design with a scroll wheel, making it a comfortable and efficient option for navigating on your computer. With a tracking method of mechanical and a low item height of 2 inches, this mouse is a reliable and stylish choice for those looking for a unique and retro computer accessory.