USB to RS485 Converter Adapters for Laptops - Black + Green (5PCS)

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-115200bps, up to 6Mbps
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.
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;
One-Card;
Industrial automation; instrument;
Parking; Bus fees charging;
Dining Hall; Staff attendance machine;
Highway toll station; ATM machine etc.
Supporting system: Winxp Win7/8 32,64bits vista;
Drive download: kuai.xunlei.com/d/WcU3CMnr.Ih3UQQA027

Wiring instructions:
USB interface: directly connect to laptop USB interface, half-duplex;
485 Bus Interface: RS485_A interface, RS_485B interface. Cable terminals are marked with A or B letter, connect them to 485 bus interface of other devices to achieve communication. Some devices are marked with D+(means A) and D-(means B).