Canon EOS-1D X Mark III Advanced User's Manual page 627

Steps on the camera (2)
5.
Select [OK].
6.
Select [OK].
7.
Select [OK].
Connection settings for EOS Utility are now complete.
Manually pairing the camera and computer after this is no longer necessary, as long as
you do not change the settings after you have paired the devices once.
This message is displayed after the camera detects the computer
where you clicked [Connect] in step 4.
Select [OK].
Display returns to the [Network settings] screen.
The camera's <
Setting information is stored on the camera.
> lamp is lit in green.
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