Supports 3 power supply modes: 5V external power supply; 3.3V external power supply; Powered by external sources (3.3V-5V required)
Equipped with 3 LEDs: TXD LED、RXD LED、POWERLED
TXD、RXD、RTS#、CTS#: Using bent needles for lead out
Other functions PIN: Reserved solder pads (for distribution pin and socket, can be inserted up or down to access the user system; PIN spacing supports insertion into a universal board)
Support Mac Linux. Android、WinCE、Windows 7/8/8.1/10

VCCIO outputs 3.3V or 5V (module powered by USB, jumper cap must be jumped to 3.3V or 5V) GND to GND
TXD connected to MCU RX (signal flow direction: MCU.RX RXD connected to MCU TX (signal flow direction: MCU.TX> FT232> PC.RX)
RTS connected to MCU CTS (signal flow direction: MCU.CTS CTS connected to MCU RTS (Signal Flow Direction: MCU.RTS> FT232> PC.CTS )