Audio Expansion Card - No Input

The Audio expansion card uses TRRS 4 pole mono headset in. Not sure how you are connecting your mic, but the splitter cable likely won’t work as it would be expecting a mic only input. The aux cord would work, but only if it is a 4 pole aux and you are connecting a headset.

If you are using a 4 pole headset plug, then you may have a bad card, in that case I would contact support.

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