Automated translation (from Italian):
"Good evening, I connected a DELL S2422Hz monitor (*** integrated camera and microphone) to the MacMini M4, but the system does not see the camera and microphone. So I can't use Zoom and similar programs. I thank whoever can help me solve this problem!"
Dell – Dell 24 Video Conferencing Monitor - S2422HZ
This monitor has three video inputs
- USB-C (DIsplayPort v1.2)
- DisplayPort v1.2
- HDMI
Note that DisplayPort and HDMI do not carry data, so if the only cable running between your M4 Mac mini and this monitor is a HDMI to HDMI one, the camera and microphone won't work because they won't be connected.
You would need to, e.g.,
- Run a USB-C to USB-C cable from one of your Mac mini's rear-panel USB-C / Thunderbolt ports to the USB-C (DisplayPort Alt Mode) input on the monitor, or
- Make a video connection with DisplayPort or HDMI, and make a separate USB connection to the monitor's USB 3.2 Gen 1 upstream port
for there to be any chance of the camera and microphone working.