Features:
USB Compliance: USB1.1/2.0 compliant
Connector: USB type A
Speed: 12Mbps(Full-speed USB)
Serial interface
Numbers of ports: 1
Serial standards: RS485/422
Connector: DB9 male
Serial Line protection
ESD Protection: 15KV embedded
Working format: asynchronism, point to point or multi-point, 2 lines half duplex
Direction: automatic send data control – no software drivers needs
Band rate: 300 -115,200bps, automatic test signal rate
Loading: support 32 port loop environment (or handtailor 128 point)
Transmission: RS-485/422 side 1,200m (9,600bps), USB side 5m
Protection: 600W surge protection, ±15KV static electricity protection
Interface type: USB side type A interface female, RS-485/422 side DB-9 male or 5 terminal blocks
Working temperature: -20 to 60°C
Storage temperature: -25 to 85°C
Relative humidity: 5% to 95%
Input powered: no external power supply needed
Consumption: static consumption less than 80mA, dynamic average consumption less than 150mA
Serial Communication Parameters : (Data Bites: 5, 6, 7, 8) (Stop Bits: 1, 1.5, 2) (Parity: None, Even, Odd, Space, Mark)
Flow Control: RTS/CTS, XON/XOFF
FIFO: 128bytes
Loading: 32 nodes or custom 128 nodes

Pinout : 
USB signal: VCC, DATA+, DATA-, GND, FG
RS-485 signal: D+, D, GND
RS-422 signal: R+, R-, T+, T-, GND