2 in 1 USB to RS422 & RS485 Converter with CH340T 64b Win7 Linux 28TC Support Specification:1. This converter uses the high-performance ch340T chip, supports most operating systems (including Windows and Linux)2. Baud rate range: 300 - 115200bsp!3. With TVS surge protection, strict requirements for product design by industry4. Everything at a glance. An array with three indicators. One is the power indicator: normal USB power light (red), one computer via USB to 422 (485), then send data indicator (red), there is 422 (485) to receive the data computer loading the data received indicator (green) light.5. Very easy to carry, almost with a U.6 drive. The converter is a USB2.0 interface, compatible with USB1.1.7. PC via data cable directly to the top on it, not external power supply. Pin Definition:USB-422 terminal definitions1 - R-(Receive)2 - R+ (Receive)3 - T-(Send)4 - T+ (Send)5 - GND (Ground)USB-485 terminal definitions1 - Empty2 - Empty3 - B-(485 Mode)4 - A (485 Mode)5 - GND (Ground) Package Included:1pc 2 in 1 USB to 485 USB to 4221 USB Converter Adapter for Computer Cable