There is no "port" option in the device manager, which is caused by the wrong setting. The solution is as follows:

1. Right-click this computer on the desktop, and then click Properties on the right-click menu. 2. Enter the system setup page and click "Device Manager" on the left.

3. Open the device management page, find the "Network Adapter" here, and then click the extension option. 4. After expanding, find the network card, right-click it, and then click "Uninstall Device" inside.

5. After uninstalling the network card, right-click "Network Card" and click "Scan to detect hardware changes".

6. After scanning, the network card will be automatically added back, and the network card driver will be automatically installed. In this way, our network card can be displayed normally and set normally.