This Logitech C-BT44 USB receiver is the perfect solution for connecting your Logitech Desktop EX-100 keyboard and mouse. The receiver is designed to provide seamless connectivity with no need for additional software or drivers. It is easy to use and allows you to work from a distance of up to 10 meters. The receiver is compatible with both Mac and Windows operating systems and has been manufactured in China to the highest standards. It is a wired device with no custom modifications, making it an ideal option for those who prefer a simple and efficient setup. The Logitech C-BT44 USB receiver is a reliable accessory that ensures you have a stable and secure connection for your keyboard and mouse.