Features: USB to RS485 Converter Adapter USB connector: to your PC RS485 connector: to your RS485 device No need external power, powered by USB port Fully compliant USB 2.0 standard, backward compatible with USB1.1 Specification: Support System: Windows XP, Vista, Windows 7, Linux , MacOS , and WinCE5.0 drive Supports baud rate range: 75bps 115200 bps, up to 6Mbps Work temperature range: -40C ~ +85C Communication distance: 1200m (max) Dimension: Approx. 6x1.7x0.8cm (L*W*H) 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 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 includes:1 x USB to RS485 Converter