Windows 10 cant detect more than two XLR-inputs.

Hello people.

Is it possible for me to detect more than two mics in Windows?

The reason i am asking:

I want to do a live podcast. I use OBS as software to go live. In windows my steinberg ur 44 is the input, and output. All mics working fine with headphones directly in steinberg. But windows only detect two mics. So does OBS.

How can i get my steinberg output to OBS?

Thanks for any help.

best regard