I cannot get 2 cameras displaying

[al.nev.82]

Hi there, I am currently running a Mac Mini and trying to set up two cameras on OBS; however, only 1 camera displays. I have followed a setup such as adding a new scene, adding 2 cameras, which it is registering. But like I say, it only displays one camera. I have researched the problem, such as using different USB ports, and turning off the firmware. But this has still not solved the issue. Any help would be great.

 

[Babs Johnson]

Do you have OBS in studio mode? Can you see the second camera when you switch to it scene?
Connect the cameras to the computer one at a time when setting up, if the cameras are USB and the same make and model, then you have to use the manufacturer's app to name them differently.