Specifications: 1. This converter utilizes a high-performance CH340T chip, supporting most operating systems (including Windows & Linux). 2. Baud Rate Range: 300 ~ 115200bps! 3. Features TVS surge protection, designed to strict industry standards. 4. All-in-one design with three indicator lights: Power indicator (red for USB power), data transmission indicator (red for computer to 422/485), and data reception indicator (green for 422/485 to computer). 5. Highly portable, similar in size to a standard USB flash drive. 6. The converter uses a USB 2.0 interface, compatible with USB 1.1. 7. Connects directly to your PC via a data cable, requiring no external power supply. Pin Definitions: USB to 422 Terminal Definitions 1 --------------- R- (Receive) 2 --------------- R+ (Receive) 3 --------------- T- (Transmit) 4 --------------- T+ (Transmit) 5 --------------- GND (Ground) USB to 485 Terminal Definitions 1 --------------- Empty 2 --------------- Empty 3 --------------- B- (485 Mode) 4 --------------- A (485 Mode) 5 --------------- GND (Ground) Package Includes: 1 x 2-in-1 USB to 485 USB to 422 Converter Adapter 1 x USB Cable