Hi there,
Please provide the scenario when the last time you disconnect the XG Mobile?
If the device was unplugged while the unit is in sleep mode or shut down, please try below
Why is my laptop showing the message "XG Mobile not detected"?
A3: If the ROG XG Mobile connector was not correctly disconnected in sleep mode or while shutting down, please follow the directions to connect ROG XG Mobile connector again. Then click "Y" button to boot laptop safely, to avoid unsaved data loss.
Thank you.