# BiBoard V1

When you use a USB type-C data cable to upload the firmware for the mainboard **BiBoard V1.**

<figure><img src="/files/vHcouJgbubMI2j9wQ3Fg" alt=""><figcaption></figcaption></figure>

* On Windows, if there is **no** serial port in the port list of **Device Manager**:

<figure><img src="/files/OQ9sDgrC0Wgihg1niixC" alt=""><figcaption></figcaption></figure>

* On Mac, open the **Terminal** program under the **Applications**-**Utilities** folder and type the following commands. If no serial device name starting with "***tty.wchusbserial***" or "***cu.wchusbserial***" is found:

  ```
  cd /dev
  ls
  ```

#### Please download and install the USB driver:

* Windows: <https://www.wch-ic.com/downloads/CH343SER_EXE.html>
* Mac: <https://www.wch-ic.com/downloads/CH34XSER_MAC_ZIP.html>

For the macOS(from the version ***Sequoia 15.1***), after installing the driver, you need to enable the driver, as follows:

**Settings** -> **General** -> **Login Items** & **Extensions** -> **Driver Extensions**

<figure><img src="/files/NfPl5sfaV5CR4d3lEu4K" alt=""><figcaption></figcaption></figure>


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