1. 3-in-1 RS-232/422/485 serial interfaces. 2. Cigarette pack size for easy integration. 3. Supports Windows Native COM drivers with automatic network connection recovery. 4. Built-in Ethernet and TCP/IP protocol supports Driver Mode, TCP Server, TCP Client, UDP . 5. RS-485 supports ADDC (Automatic Data Direction Control intelligence). 6. Built-in 15 KV ESD protection for all serial signals.