Question about SteelSeries Arctis Pro + GameDAC (RGB)

Hey I've been using this headset on the PS 4 Pro for a while now, and it's doing a great job. Recently, I wanted to connect it to the PC for a change. Everything worked so far, except the microphone sound. I had no input signal at all on the PC. Nevertheless, the monitoring via the Game DAC works. I went through the sound settings once, but nothing worked after that. Would anyone be able to help me? LG