Yes, works great, tested with iPad Pro 2020 (2nd Gen), 2022 (M2, 4th Gen) and iPad Air 2022 (M1, 5th Gen)

The ASUS ZenScreen MB16ACV is not compatible with the iPad Pro without the use of additional accessories and specific configurations. Here's why: - The iPad Pro does not have enough power to power a monitor via its USB-C port, as monitors require more power than the iPad Pro can provide. - To use this monitor with an iPad Pro, you may have to use a powered USB-C hub to provide the necessary power, but it is not guaranteed to work. Therefore, direct compatibility without additional accessories is limited.

I have an older model of the ZenScreen and there the power supply AND the image signal is solved via ONE single input (USB-C), if that should also be the case with this model, then I think a VGA-->USBC hardly works (I think VGA cannot be used as power supply??).

Try pressing the Windows and P keys at the same time. It may be that the screen still needs to be switched from "Duplicate" to "Expand". Otherwise, it is advisable to check the display options in the settings.

all in one usb c cable

No, audio via USB-C DP-Alt mode is not possible. Nor does it work via Displaylink. The monitor can do both.