This Genuine Microsoft Desktop Wireless Optical Receiver 3.1 USB Model 1028 is the perfect addition to your computer setup. With its easy plug-and-play connectivity, you can start using it right away. The black color gives it a sleek look that will match any setup. The receiver is designed for use with Microsoft mice and trackballs, ensuring optimal performance. It has one button for easy navigation and operates using an optical tracking method. The unit is manufactured in China and comes with a USB connectivity option. Upgrade your computer setup today with this genuine Microsoft product.