Well I have come up with this info. Looks like it does not have a clean HDMI output, and no sound over HDMI is what I see. So...
It also has a Micro HDMI output, but this is not clean, showing a red dot in the frame (which could be cropped out in post if you are out to mimic a “2:35:1 cinemascope look by adding top and bottom black bars”)…. Also note that recording in 4K simultaneously internally and to a recording device is not possible.
HDMI OUT terminal Type D
HDMI output while recording (shooting screen without sound) available
HDMI output to HDR compatible TVs* available
The M50 has a Micro-B USB 2.0 port, a Micro HDMI Type-D port -- which supports HDMI output of the shooting screen without sound while recording.