Features: 1.VCC, TX,RX can all be switched to 5V/3.3/2.5V/1.8V 2. The DC5.5-2.1 interface can provide high current to power external devices 3. All four UARTs have TX/RX indicator to show the status 4. The four serial ports use XH2.54 interface The excellent per suitable formance of FT4232HL is very suitable suitable for high-demand industrial occasions. It realizes simultaneous communication with a single UsB expansion 4 UART serial ports, of each other, without mutual influence, the computer displays 4 COM ports, and provides a maximum communication rate of 12Mbps Material: PC+Metal Color as shown Package Contents: 1 x USB to 4 Way TTL Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.