Features Original FT232RL onboard Supports Mac, Linux, Android, WinCE, Windows 7/8/8.1/10... 3 power mode : 5V output, 3.3V output, or powered by target board (3.3V-5V) 3 LEDs: TXD LED, RXD LED, POWER LED Functional Pins * TXD, RXD, RTS#, CTS# : connected to the onboard soldered pinheaders * The other Pins : accessable on the drill holes (separate pinheaders are also provided for easily connecting to user system, the pitch is compatible with bread boards) How to Use (In the case of working with a MCU) VCCIO--3.3V or 5V output (the module is powered from USB, onboard jumper should be shorted to 3.3V or 5V) GND -- GND TXD -- MCU.RX (signal direction: MCU.RX RXD -- MCU.TX (signal direction: MCU.TX > FT232 > PC.RX) RTS -- MCU.CTS (signal direction: MCU.CTS CTS -- MCU.RTS (signal direction: MCU.RTS > FT232 > PC.CTS) Package Contains FT232 USB UART Board (micro) × 1 5-pin male pinheader & 5-pin female pinheader × 2 6-pin custom connector jumper wire × 1 For more resources you may need, pls contact me via Amazon message, i will send you then.