the manual says the audio header is at the very bottom and all the way to the left.
it says that the first pin on the left (BOTTOM) is pin number one
and it says that the first pin on the left (TOP) is pin number two
the sequence continues across the header.
1 Mic Left in
2 Ground
3 Mic Right in
4 GPIO
5 Right line in
6 Jack Sense
7 Front Sense
8 Key
9 Left line in
10 Jack Sense
the manual also says this:
Front Panel Audio Header
This header allows user to connect the front audio output cable with the PC front
panel. This header allows only HD audio front panel connector; AC’97 connector
is not acceptable.
i have went on to read this:
Audio Design Considerations
Front panel audio design in conjunction with motherboard audio header design is dependant upon
the type of audio CODEC being used on the motherboard. In the past, AC97 Integrated Audio
CODECs were prevalent. With the introduction of Intel High Definition Audio, many new
motherboard designs are switching over to High Definition (HD) audio CODECs. Designers
should note that AC’97 and Intel High Definition Audio front panel motherboards and I/O cards
implementations are different and may not be directly compatible or interchangeable
CAUTION
It is strongly recommended that motherboard designers only use Intel® HD Audio analog front
panel dongles with the Intel® HD Audio analog front panel header to insure that the jack detection
and dynamic re-tasking capability is preserved. Passive AC’97 analog front panel dongles (ones
which leave the 5V Analog pin-7 line unconnected on the dongle) may be used with the Intel® HD
Audio analog front panel header. But note that the front panel jack detection and re-tasking
functionality will be lost as the AC’97 jacks cannot support connection to the SENSE line. In
addition, software must be aware that an AC’97 dongle is being used with an Intel® HD Audio
analog header since the software might need to dedicate codec ports that are connected to the
header to meet the product’s intended functionality.
have a look at page 25 here:
http/www.formfactors.org/developer%5Cspecs%5CA2928604.pdf
it looks like your computer case has to have a special circuitboard for front panel audio.
and its kinda dumb because it looks like your motherboard case has to have a special circuitboard for ac'97 audio too.
i mean.. it appears to be something as simple as an 'automatic mute' that mutes the main speakers whenever you connect the headphones into the front panel.
but i am seeing that the ac'97 has two audio grounds.. and the intel HD audio only has one audio ground.
page 21 and 22 show the differences between the two.
you have clearly stated that your motherboard has the ac'97
and the motherboard manual says that your motherboard is intel HD audio.
it doesnt appear that they mix very well and i would disconnect them and plug the headphones into the main speakers.
apparently you need to hookup the ground wire to pin number two on the motherboard.
pin number two is the first pin on the left (TOP ROW)
then you need to hookup the left and right channels for the headphones.
output L goes on pin number nine.
pin nine is the last pin on the right (BOTTOM ROW)
output R goes on pin number five.
pin five is the pin directly in the middle (BOTTOM ROW)
this should be what you need to get left channel audio from the left speaker of the headphones.
**now the pins for your microphone**
looking at the differences between the pins.. it says that ac'97 has the second pin for microphone power or additional mic input for stereo mic.
that means MIC IN goes on pin number one.
pin one is the first pin on the left (BOTTOM ROW)
MIC BIAS goes on pin number three.
pin three is the second pin to the left (BOTTOM ROW)
...it is the pin right next to the MIC IN...
this should be enough to get your headphones and microphone working.
the reason why your microphone was recording at the same exact level is probably because the input of the soundcard was using 'line level' when it should have been using 'microphone'
i bet if you have a 'line level' volume slider, the volume will change.
seems like you turned the digital input off correctly, but have yet to change the analog input from line level to microphone.
i cant guarantee your microphone will work in the front panel without using the appropriate intel HD audio front panel circuit.
it might go straight through.. but it might not work because of the 'auto mute' feature.
the auto mute feature works by detecting something is plugged in because when you plug something in it makes two wires touch.
you cant simply touch two wires to activate the feature.. you need an actual circuit with pieces on the circuit board so you dont break something.
anyways.. you should be good to go.
got your pins hooked up right (i would stuff those other wires somewhere out of sight)
and tackled the only logical reason why your mic volume wasnt working.