4 Port RS-232 or RS-485/RS-422 Serial Device Server

1, Auto-detecting 10/100Mbps Ethernet
2, 4 port RS-232 or RS422/485 serial interfaces 
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 Server/Client, Ethernet Modem, Pair connection 
5, Supports Linux fixed/real tty drivers 
6, RS-485 supports ADDC (Automatic Data Direction Control intelligence) 
7, Built-in 15 KV ESD protection for all serial signals 

Serial 
Standard: Accord EIA RS-232, RS-485, RS-422 standard 
RS-232 signal:  TX, RX, RTS, CTS, DTR, DSR, GND 
RS-485 signal:  D+, D-, GND 
RS-422 signal: R+, R-, T+, T-, GND 
Working:  Asynchronous format, single to single or more, 2 wires half
duplex, 4 wires full duplex 
Direction:  RS485 side adopt ADDC technology, auto text and control
data transfer direction
Runoff:  Support RTS/CTS Flow Control or non-flow control 
Band rate: 1200-230400bps 
Bit byte: 5bit, 6bit, 7bit, 8bit 
Check out: No-checkout, odd, even, Mark checkout, Space checkout 
Loading: RS-485/422 side support 32 or 128 point loopback 
Transmit: RS-485/422 side 1200M, RS-232 port 15M 
Protection: 600W surge protection,15KV static protection 
Connector  RS-232 or RS-485/422 side RJ45 connector

Ethernet port 

Standard: Accord 10Base-T/100 Base-T standard 
Protocol: Support TCP, UDP, APR, ICMP and DHCP protocol 
Signal: Rx+, Rx-, Tx+, Tx- 
Working: Support Server and Client mode 
Rate:  10/100Mbps, full-duplex or half-duplex 
Memory: Each port 16Kbit 
Transimit: 100M 
Isolation: 1500V 
Connector: RJ45 

Enviroment 
Working temperature: -0 to 55 
Storage temperature: -20 to 70 
Humidity: Relative humidity 5% to 95% 
Input power:  External 5V power 
Consumption: 300mA 
L*W*H: 227mm*147mm*42mm 
Shell: Iron 
Color: Black 
Weight: 230g