Motherboard ID Reading and Viewing

Important Note

This tutorial is for reading and viewing the ID of the motherboard. For tool boards, please refer to the corresponding product's ID search tutorial.

Notes

Important Notes

You must connect to the host via SSH, use a network login method to connect to the host (such as a Raspberry Pi)
Ensure the motherboard has been flashed with USB firmware before proceeding
This tutorial is only applicable for motherboard ID search, not for toolboard ID search
Make sure the motherboard is connected to the host's USB port via TYPEC
To view the toolboard ID, please refer to the relevant tutorial under the corresponding product directory

Run the following command to list all USB serial device IDs:
```
ls /dev/serial/by-id/*
```

After executing the command, please pay attention to identifying and avoid using the following two types of IDs:

ID Feature	Reason Explanation	Example
`usb-1a86_USB_Serial-if00-port0`	This is the default name for generic serial chips like CH340, cannot be used for configuration.	/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0
Contains `katapult`	Indicates the device is in flash mode, Klipper firmware must be flashed before use.	/dev/serial/by-id/usb-katapult_xxxxxxxxxxxx

Normal Case: The terminal will display an ID similar to the following (image below is just an example)
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Troubleshooting Abnormal Issues

Handling Multiple IDs

If multiple IDs appear, select the corresponding ID based on your motherboard's MCU model

Note: All IDs shown in the document are examples. Each motherboard's ID is different. Modify based on the actual ID obtained.

Note

[mcu]
serial: <Replace this with the ID you just queried>

Click SAVE & RESTART in the top right corner. It will automatically save and restart Klipper.