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 or 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 or 19.7inBaud Rate: 300bps-115200bpsTransmission Medium: Twisted PairPower Consumption: andlt 0.2WOperating Environment: -10C to 60C, Relative Humidity 10 percent to 90 percent (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