The Advantech BB-485SD9TB Port Powered 9 Pin Converter RS485 AA-021 is a reliable and efficient device designed to convert RS485 signals to 9 pin interface. With the trusted brand of Advantech behind it, this converter ensures high quality and compatibility with a wide range of devices. Perfect for computer networking and connectivity needs, this product provides a seamless solution for converting RS485 signals for improved functionality and connectivity. Manufacturing seal has been broken on the box. Cd