Specification: 1. This converter uses a high-performance ch340T chip supports most operating system (including Windows & Linux) 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 three 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. Very easy to carry, with the ordinary U disk almost. 6. The converter is a USB2.0 interface, compatible with USB1.1. 7. 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) Package include: 1pc 2 in 1 USB to 485 USB to 422 Converter Adapter 1pc USB cable