Connecting a USB Serial Cable to the Border Router

Use a USB serial cable to connect to your Border Router serial port for debugging purposes.

BeagleBone Black

The BeagleBone Black (BBB) uses the following serial port settings:

  • Baudrate: 115200
  • Data Bits: 8
  • Parity: None
  • Stop Bits: 1

Recommended cables:

How to connect

For detailed information on connecting serial cables to the BBB, see the Beagleboard Wiki. For both cables, the black wire should be connected to Pin 1 (GND), which is closest to the Ethernet port.


BeagleBone Black Adafruit
Adafruit serial cable


BeagleBone Black FTDI
FTDI serial cable

Raspberry Pi 3B

The Raspberry Pi 3B (RPi3B) uses the following serial port settings:

  • Baudrate: 115200
  • Data Bits: 8
  • Parity: None
  • Stop Bits: 1

Recommended cable: Adafruit USB to TTL Serial Cable

To learn how to connect and enable the serial console on your RPi3B, see Adafruit's Using a Console Cable guide.