Biostar P4M800-M7A Motherboard Logo
Anonymous Posted on Aug 27, 2009

The front 3mm port is disconnected and I don't know where to hook it back up. I can't tell from the manual.

  • Anonymous May 11, 2010

    The front 3mm port? Are you referring to a case or the motherboard itself?

  • Laxman Bisht
    Laxman Bisht May 11, 2010

    Please make it clear, which port exactly are you talking about..??

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2 Answers

Jon Evans

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  • Expert 78 Answers
  • Posted on Aug 27, 2009
Jon Evans
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The front 3mm ports are for mic input / headphones output. The pin connectors are as follows. You need to use the JAudio header, which are in the lower-right corner of the motherboard closest to the front of the case when it's installed.

This header has 14 pins, and allows user to connect the front audio out put cable with the PC front panel. It will disable the output on back panel audio connectors.
Within this header, pin 1 is in the lower left corner, and pin 14 is in the upper right corner, like this:

2 ... ... ... 14
1 ... .. ... 13

The pinouts are:

1 Mic in/center
2 Ground
3 Mic power/Bass
4 Audio power
5 Right line out/Speaker out Right
6 Right line out/Speaker out Right
7 Reserved
8 Key
9 Left line out/Speaker out Left
10 Left line out/Speaker out Left
11 Right line in/Rear speaker Right
12 Right line in/Rear speaker Right
13 Left line in/Rear speaker Left
14 Left line in/Rear speaker Left

Testimonial: "Thank you for your help. I had already downloaded the schematic for the board and figured it out. Yours was the correct answer. Thanks again."

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  • Master 1,768 Answers
  • Posted on Aug 29, 2009
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Call tech support of the Manufacturer.
They are usually happy to help.

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Intel Standard USB header Layout: (used by over 90% of motherboards)

instusb1a.jpg

Gigabyte Style USB header Layout: (used most commonly on Gigabyte brand motherboards)

instusb2b

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instusb3

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usbheader

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instusb6

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usbinst4
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instusb5

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