# BiBoard V0

When you use a USB type-C data cable to upload the firmware for the **BiBoard V0**,  if there is **no** serial port in the port list of Device Manager. 

{% hint style="info" %}
Note: The connection for uploading firmware is to be made directly to the **BiBoard V0** and NOT to the outside charging port on the battery.
{% endhint %}

<figure><img src="/files/dHx9pOYm6CpIVsjzZOyT" alt=""><figcaption><p>Bittle X</p></figcaption></figure>

<figure><img src="/files/iWHiJdXpXOl2NKWucUEx" alt=""><figcaption></figcaption></figure>

Please download and install the USB driver:

{% embed url="<https://www.silabs.com/developer-tools/usb-to-uart-bridge-vcp-drivers?tab=downloads>" %}

For more details, please refer to the [BiBoard V0 USB Driver to access the serial port](https://docs.petoi.com/technical-support/useful-tools#biboard-driver-to-access-the-serial-port).


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