Specification: Dimension:6.0 x1.8x1.4cm Color: Black Support System: Windows XP , Vista, Windows 7 , Linux , MacOS , and WinCE5.0 drive Supports baud rate range : 75bps - 115200bps , up to 6Mbps Supports Plug , Play and hot-swap ( USB side) ; Better than using CH341D chip or similar chip to support the laptop USB port . Communication distance up to 1.2KM, with anti-jamming performance of industrial site ; Work temperature range: -40°C ~ +85°C Communication distance :1200m(max) Applications: All kinds with RS485 port device parameter settings , data communication Short distance , such as parameter settings of the computer peripheral equipment , the use of common data lines can be . A and A port of the device when the wiring is connected , B and device B connected . Some devices D + A and D, - B . LED display of communication data Machine PLC data reading and writing Monitoring data read and write , and PTZ control Centralized control of household electrical appliances Access Control System ; card A variety of industrial automation ; instrumentation Parking ; bus fees Dining Hall ; staff attendance Highway toll station; ATM machine Package Included: 1 x PL2303HX Chip USB to RS485 485 Converter Adapter For Win7/Linux/XP/Vista

?Fully compliant USB 2.0 standard , backward compatible with USB1.1. ?No need external power, powered by USB port. ?RS485 connector: to your RS485 device. ?USB connector: to your PC. ?USB to RS485 Converter Adapter.