The Ubiquiti AF-11FX-DUP-H airFiber 11FX Modular High-Band Duplexer is a high-quality router component designed for enterprise networking setups. Produced by Ubiquiti Networks, this unit is manufactured in China and is part of their Enterprise product line. This modular duplexer is specifically designed to enhance the performance of airFiber 11FX systems by providing a high-band duplexer function, ensuring reliable and efficient network connections for businesses and organizations looking to improve their networking infrastructure.