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2 in 1 USB to RS422 & to RS485 Converter Adapter 

Product Description
1. This converter uses a high-performance ch340 chip that supports  Win7 /8/ 10

2. Baud Rate Range: 300 ~ 115200bsp!

3. With TVS surge protection, strict requirements for product design by industry

4. All at a glance. Board with Two indicators. One is the power indicator: USB normal power light (red), one computer via USB to 422 (485), and then send out the data indicator (red), there is a 422 (485) to receive data computer uploading data received indicator (green) light.

5. The converter is a USB2.0 interface, compatible with USB1.1.

6. PC through data cable directly into the top on it, no external power supply.

Pin definition
USB-422 terminal definitions
1 ————— R-(receive)
2 ————— R+ (receive)
3 ————— T-(send)
4 ————— T+ (send)
5 ————— GND (ground)

USB-485 terminal definitions
1 ————— empty
2 ————— empty
3 ————— B-(485 mode)
4 ————— A (485 mode)
5 —– GND (ground)