Feature:1. 1200m Transmission Distance: Support asynchronous half duplex, full duplex differential transmission, transmission distance up to 1200 meters, support full speed transmission mode 12MBPS.2. Chipset: With high performance processor chip, stable anti interference and anti surge, the USB to RS485/RS422 converter has become one of the most reliable dongles on the market.3. Stable Transmission: Industrial grade metal housing keeps transmission stable in complex industrial environments to protect sensitive control equipment from electrical damage.4. Plug and Play: USB to RS422 RS485 serial port converter adapter cable is easy to use, plug and play, no power supply required.5. Wide Application: Can be used for serial devices such as tax control machines, CNC machine tools, industrial machinery, instruments, barcode machines and so on.Specification:Item Type: USB to RS422 RS485 Serial Port Converter Adapter CableMaterial: MetalLine Length:Approx. 0.5m / 19.7inBaud Rate: 300bps~115200bpsTransmission Medium: Twisted PairPower Consumption: <0.2WOperating Environment: -10C to 60C, Relative Humidity 10% to 90% (Non Condensing)Working Mode: Asynchronous Half Duplex, Full Duplex Differential TransmissionInterface: USB2.0 to RS485 and RS422Interface Features: Fully Compatible with RS485 and RS422, RS232 Standard, Standard USB2.0 InterfaceOperating System:For Win 98,for 2000,for XP,for Vista,for Win7,for Win8,for Win10.Package List:1 x USB to RS422 RS485 Serial Port Converter Adapter Cable1 x Adapter