How to connect atem mini usb c to a computer without a usb c

I'm struggling trying to connect my atem mini usb c out to my current pc. I have tried a usb c to hdmi adapter however I don't believe it works. What other way or what cable can I use to connect the atem mini to my pc?

What are you trying to achieve by connecting to your computer? And confirming it is an "ATEM Mini", not "ATEM Mini PRO"?

You don’t need USB-C, you can use a USB-C to USB-A cable.
USB-C to HDMI won’t work because the USB-C connector of the Atem is used for webcam output or recording to harddisk.

What are you trying to achieve by connecting to your computer? And confirming it is an "ATEM Mini", not "ATEM Mini PRO"?

Apolagies, yes it is an 'ATEM Mini PRO'.

I am trying to connect my atem mini pro which has my camera inputs into my pc so I can use OBS to stream.

What are you trying to achieve by connecting to your computer? And confirming it is an "ATEM Mini", not "ATEM Mini PRO"?

Apolagies, yes it is an 'ATEM Mini PRO'.

I am trying to connect my atem mini pro which has my camera inputs into my pc so I can use OBS to stream.

You can stream directly from the ATEM Mini Pro. You don't need a computer.
If you really want to use OBS, you can use a USB adapter as Benno mentioned above. You may be limited with which resolutions you can use, depending on what USB ports you have available on your computer.

How can I connect my ATEM Mini to a computer without a USB-C port, allowing it to function as a webcam?