Used unit pulled from access control system no longer in use. Functions as expected and no physical damage present. What you see in the pictures is what you get (adapter unit, serial cable, power supply).The Sielox Network Interface Adapter is a specialized device that converts RS232 serial connections to RS485 network interfaces. This adapter allows for seamless communication between devices that use different interface protocols, making it easier to integrate various systems within a network. With the ability to support serial connections and offer network capabilities, this interface adapter is a versatile tool for enhancing communication and efficiency in computer networking setups.