Dock 3 outputs UART logs on its USB‑C port, which you can view with any standard serial terminal app while the dock is running. You can also access the logs directly in a browser that supports the Web Serial API, currently available in recent versions of Chrome, Edge and Opera.
There are several Web Serial–based applications; this example uses https://webserial.io/ to display the log output.
Before you start
- Use a USB‑C cable to connect Dock 3 directly to your computer.
- Make sure only one dock is connected and avoid other USB devices (besides mouse and keyboard) to reduce the chance of selecting the wrong device.
Step 1 – Connect Dock 3 to your computer
- Connect Dock 3 to your PC using a USB‑C cable.
- Confirm that Dock 3 is powered on and running.
Step 2 – Open the WebSerial app
- In a supported browser (Chrome, Edge, or Opera), go to https://webserial.io/.
- Click Select Serial Port….
- In the dialog, select the device named USB JTAG/serial debug unit and click Connect.
- Note: The dialog text and device names can vary depending on your browser and operating system.
- Note: The dialog text and device names can vary depending on your browser and operating system.
The browser will now establish a serial connection to Dock 3.
Step 3 – Configure and connect in WebSerial
- On the main WebSerial page, leave all serial settings at their defaults (no changes are required).
- Click Connect.
WebSerial now starts listening for UART output from Dock 3.
Step 4 – View the logs
- Log messages from Dock 3 will appear in the main WebSerial window.
- If the dock appears idle, press the control button on Dock 3 to generate new log statements.