1. auto-detecting 10/100mbps ethernet interface 2. 3-in-1 rs-232/422/485 serial interfaces 3. cigarette pack size for easy integration 4. cupports windows native com drivers with automatic network connection recovery 5. built-in ethernet and tcp/ip protocol supports driver mode, tcp server, tcp client, udp server/client, ethernet modem, pair connection 6. supports linux fixed/real tty drivers 7. rs-485 supports addc (automatic data direction control intelligence) 8. built-in 15 kv esd protection for all serial signals