Microsoft Surface Hub 2 SmCamera - Manual (Page 397)

Method 2: Change Project setting to Extend
Press Windows key+P and then select Extend .
At times, a wired Connect session that is started from the Welcome screen by
connecting a DisplayPort input will exit back to the Welcome screen after using the side
keypad or the source button to cycle through all source inputs.
Cause: This is an issue in the Connect app and its default full-screen state. By
changing the size of the app or by selecting a DisplayPort input thumbnail in the
Connect app, you can prevent input cycling from affecting the app.
Resolution: Launch the Connect app from the Welcome screen and connect a
DisplayPort input to resolve this issue. If the input is already connected, manually
select the thumbnail.
If you have questions or need help, you can create a support request .
Connect devices to Surface Hub 2S
Connect other devices and display with Surface Hub v1
Connect app exits unexpectedly
Contact Support
Learn more