Asus motherboard front-end audio settings

No sound or no light microphone ~? It is estimated that there is a problem with the front-end audio-frequency line connection method of the chassis. You can put a power first to restore the factory settings.
Common Front-frequency line connection method
At present, the front-end audio terminals of the jinhetian chassis and the front-end audio plug-in of the motherboard are generally connected as follows:
MIC in ● 1 2 ● Gnd
Mic VCC ● 3 4 ● + 5 V (not connected)
SPK-R ● 5 6 ● Rin
● 7 8
SPK-L ● 9 10 ● Lin

Each black spot represents a pin. Can you see it clearly?

Pin definitions:
1 mic_in front mic input.
2 Gnd is used to ground the analog audio circuit.
3 mic VCC: the microphone offset voltage.
4 + 5 V filtering + 5 V for analog audio circuits. Not connected
5 SPK-R output to the front right audio signal.
6. the right audio signal returned from the front-end.
7. No definition
8. No pins.
9 SPK-L output to the front left audio signal.
10 Lin returns the left audio signal from the front.

If the rear audio output of the motherboard is not 2.1 audio channels, set the AC 97 mode in the BIOS.

From: http://www.jsing.net/q/computer/knowledge/20070814/41734.html