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  4. 2. Hardware Interfaces
  5. 2.1 Communication Ports
  6. 2.1.2 RS-232

2.1.2 RS-232

Port pinning

PinFunctionPigtail wire color
1GNDbrown
2TX (transmit)white
3RX (receive)blue
4VIN, 5V or 3.3Vblack

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