ONETAK TCP/IP Ethernet RJ45 to Serial RS232 RS485 RS422 Converter Adapter Adaptor Flow Control None RTS/CTS RS-232/422/485 3-in-1 serial interface 300-230.4KBPS baud rate, Support 2, 4 wire RS-485; 10/100M Ethernet, auto detect straight/cross cable Serial Interface: Control Signals CTS, RTS; Flow Control None, RTS / CTS Serial Connector: DB9-DTE for RS-232 (Male). 6-bit terminal connector for RS-485 Support protocols TCP/IP, UDP/IP, ARP, DHCP, ICMP BOOTP DNS HTTP ARP All serial ports have built in 600W lightning protection