Questions about MU Classic Ultra High

Yes, it has. The camera's performance matches its price. It is a far cry from a Logitech C920 and even further from a Logi Brio.

Unfortunately, field reports have shown that only branded cams work reliably on the PS4.

I think yes as this is mentioned in the description: Use the Full HD webcam with your Mac, Windows PC / laptop and other USB-A supported devices. I am checking the same info as well :)

An opinion. You don't have to wait for software, you have to manage the stock sufficiently before putting it online.

No. But the quality is good and appropriate in almost all conditions. Focusing also works well.

The microphone appears in the control panel under Audio - so it should work. I also use it successfully for calls with MS Teams 𝘰𝘩𝘯𝘦 camera.

No Classic USB connection

The cable is 1.30 m long

In my opinion, you can't expect the world for CHF 40. Personally, therefore, it would not have occurred to me to use the microphone of this small part at all. It is first and foremost a camera and does its job "well".

Yes, why not?