HD audio to 3.5 mm microphone or combo jack

Hello,

I am building a custom front panel for my second sub 4L gaming PC. I already have a headphone out via a dragonfly DAC and 2 USB 3.0 ports. Right now I am looking for a way to connect a microphone jack to the HD audio header. Any help will be appreciated.

Cheers,
c4fusion

You could build a DIY header if you lookup the pinouts and are comfortable soldering.

AC'97 and HD audio front panel layouts - Windows 7 Help Forums

What about an external USB microphone?