P3adv or P3Pro
Can the normal USB module of a GL300C drive DJI goggles via the goggles' normal cable connected to a HDMI  to micro USB adapter which in turn is connected to the micro USB port of the normal module?
I know the GL300C can drive goggles with the HDMI module fitted etc. but I am asking about the normal USB module and the micro USB port it contains.

Highly unlikely, as the micro USB port is reserved for factory programming and diagnosis.  Video would need a separate encoder chip to output a signal via USB, similar to what is present in the HDMI module.

Aloha Sean,

     Ditto on what endotherm says.  DJI does not profess any USB capabilities between the Goggles and the P3 series.  The best we can do between them is using the HDMI module and connectivity.  DJI does not even note that compatability since the HDMI module is an add-on for the P3A & P3P remote controllers.

     Hope this helps!

Aloha and Drone On!

Thanks 'guys', I did notice that it is marked "reserved port" in the manual. Actually connected via the HDMI module etc. I get telemetry in the goggles which I was not expecting.