How to Configure FX30 to work with a sim card

You can see here to share cellular data to ethernet client

https://forum.mangoh.io/t/setting-up-mangoh-red-as-router-to-cellular-gateway/1241

For sharing cellular data to USB ECM interface, you can see here:

(as your FX30 is using WP76 module, you need to change the “usb0” to “ecm0” and “rmnet0” to “rmnet0_data0” inside those commands)