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  A7V8X-X motherboard and case front panel audio connection labels don't match 
 
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Paul Johnson Dec 29, 2003, 07:32pm EST Reply - Quote - Report Abuse
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I have a case that has front panel audio connections and I would like to utilize them, but the labels of the audio connections on my motherboard and case don't match.

Here are the labels from my motherboard:
AGND, MIC2, MICPWR, +5VA, LINE OUT-R, BLINE OUT-R, NC, LINE OUT-L, BLINE OUT-L

Here are the labels from my case:
MIC-IN, R-OUT, L-OUT, GROUND, GROUND

Does anyone know how to map these?


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Tim Zorka Jan 24, 2004, 03:34pm EST Reply - Quote - Report Abuse
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Edited: Jan 24, 2004, 03:36pm EST

 
>> Re: A7V8X-X motherboard and case front panel audio connection labels don't match
My front audio connections are a little different, here's how I have them matched:
MBoard --> Front Panel
AGND --> GROUND
+5VA --> (nothing)
BLINE_OUT_R --> R-OUT
(empty)
BLINE_OUT_L --> L-OUT
MIC2 --> (nothing)
MICPWR --> (nothing)
Line Out_R --> R-IN
NC --> (nothing)
Line Out_L --> L-IN

I have two front panel microphine wires, labeled "MIC-IN" and "MIC-OUT" but have no clue where they go. Anyone know?

BTW, when there's no headphone plug in the front panel jack, R-IN is shorted to R-OUT, and L-IN is shorted to L-OUT. So the front panel acts like the two jumpers I removed, and the headphone jack on the back panel is active.

Still no idea how to get the microphone jack on the front panel to work.

Regards.

Colin Grigson Aug 08, 2004, 10:33am EDT Reply - Quote - Report Abuse
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>> Re: A7V8X-X motherboard and case front panel audio connection labels don't match
This issue does seem to cause lots of problems, primarily because there doesn't seem to be any co-operation between case manufacturers and motherboard manufacturers in the labelling of pins and leads.

Typically there will be 10 pins on the board in 2 rows of five, one pin will be missing.

If we call this missing pin 8 then the wiring from the case should go like this

1 Mic
2 Ground or G or GND
3 Nothing
4 Nothing
5 R OUT - This usually has a jumper on it when you start
6 R IN or R-RETURN(RET) - This usually has a jumper on it when you start
7 Nothing
8 No Pin
9 L OUT - This usually has a jumper on it when you start
10 L IN or L-RETURN(RET) - This usually has a jumper on it when you start

Bear in mind that a lot of cases support stereo mics (whereas most motherboards don't) so you may have L-MIC and R-MIC and two grounds, in this case I just use the right Mic and one of the grounds and leave the left unconnected.


bossa ritchie Aug 08, 2004, 12:10pm EDT Reply - Quote - Report Abuse
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>> Re: A7V8X-X motherboard and case front panel audio connection labels don't match
Sometimes when you connect the front audio jacks it stops the 1s at the back from working, I cant remember if it happened with my ASRock Mobo or MY ASUS 1 the same as yours.

colin green Jan 02, 2005, 11:41am EST Reply - Quote - Report Abuse
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>> Re: A7V8X-X motherboard and case front panel audio connection labels don't match
I have a similar problem to Paul with the front panel audio and mic connections. I have an ASUS A7V8X motherboard with the same pinouts as his, ie

MIC2 AGND MICPWR +5VA

LINE OUT_R BLINE_OUT_L NC LINE OUT_L BLINE_OUT_L


my case has the following cables

MIC VDD MIC DATA MIC GND

EAR R EAR R EAR L EAR L EAR GND


EAR R & EAR R are connected together and EAR L & EAR L are connected together.

What is MIC VDD and where does it connect?
What is MIC DATA and where does it connect?

I am assuming that EAR R & EAR L would be LINE and BLINE and obviously GND is ground

Any ideas would be appreciated

Cadge


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