UART USB to 4 Way TTL Serial Port Module FT4232 Chip DC 5V Converter Board for Hardware 1. Function: Expanding single USB to 4 UART serial ports, this serial port module can achieve simultaneous communication.2. 4 WAY TTL PORT: All 4 serial ports are using XH2.54 port, and 4 way UART all have TX or RX indicator to show the statuette.3. Easy Switching: VCC, TX and RX can switch between 5V, 3.3V, 2.5V and 1.8V, and the switching is also very fast and simple.4. Wide application: allows flexible application in electronic devices and automation devices, powerful and useful.5. Fine workmanship: with excellent workmanship, the serial port module is not prone to cold connections, simple to install. Specification: Item type: serial port module Material: printed circuit board Operating voltage: DC 5V (USB power supply) Function: to achieve simultaneous communication with a single USB to expand 4 UART serial ports. Applicable scenarios: for electronic equipment, automation devices. Package list: 1 x serial port module Note: Do not use the product in an electrostatic environment, otherwise it will cause static electricity to damage electronic components.