Features: 1.VCC, TX, can all be switched to 5V/3.3/2.5V/1.8V 2. The DC5.5-2.1 interface can high current to external devices 3. All four UARTs have TX/ indicator to show the status 4. The four serial ports XH2.54 interface The performance of FT4232HL is very suitable for high-demand industrial occasions. It realizes simultaneous communication with a single UsB expansion 4 UART serial ports, of each other, without influence, the computer displays 4 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 the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.