Microsoft Wireless Optical Desktop Receiver 3.0, Model #1012 in a sleek grey color. This wired mouse, trackball, and touchpad combo with an optical tracking method and USB interface is perfect for any computing needs. Made by Microsoft, a top brand in the industry, this item is a must-have for anyone looking for a reliable and high-quality accessory. The unit quantity is one, and the country/region of manufacture is China.