Specifications:1.Connector A:USB Type A 2.0 Male2.Connector B:RS485 4 PIN Termianl3.Cable Length:1ft4.Operating voltage: 5V5.Pins: A+, B-, GND,5V6.Built-in ch340 chip.7.Easy operating mode configuration and setting8.Supports WIN98, WIN2000, WINXP, WIN7, WIN10, VISTA.Special support for WIN7 32-bit and 64-bit.9.It can provide 5V 200MA power to peripherals.10.Support STC microcontroller download;Support 115200 high baud rate;Support serial port setting and debugging11.Application:Centralized control of home appliances; access control system; various industrial automation; instrumentation; employee attendance machine; expressway toll station; ATM machine.