How does the headphone and microphone jack on case's panels work?

[Windows95]

I mean these:
 

 

 

I never understood what those do. Does anyone actually use them? how do you plug them to the motherboard? I assume there is a cable that you can plug into the botherboard.. I have a define R4 and an old board (gigabyte x38dq6) what do I do so I can plug the headphone there instead of into the back of the computer which is annoying?

[Spotty]

2 minutes ago, Windows95 said:

I assume there is a cable that you can plug into the botherboard..

This. 

Check your motherboard to see if it has a front panel audio header or refer to your motherboard manual.

[.Apex.]

22 minutes ago, Windows95 said:

I have a define R4 and an old board (gigabyte x38dq6) what do I do so I can plug the headphone there instead of into the back of the computer which is annoying?

Your board does have front audio, look for the "F_Audio" connector between your Rear Audio jacks and your first PCIe 1X slot.

[Windows95]

11 hours ago, _Syn_ said:

Your board does have front audio, look for the "F_Audio" connector between your Rear Audio jacks and your first PCIe 1X slot.

is this one? (green, lower left)

 

 

the problem is... i dont see any cables coming out of the front of the r4

[.Apex.]

8 minutes ago, Windows95 said:

is this one? (green, lower left)

Yes

 

8 minutes ago, Windows95 said:

the problem is... i dont see any cables coming out of the front of the r4

It should, otherwise they wouldn't put front audio, and the cables are mentioned in the manual