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The front panel audio header supports HD audio by default. If your chassis provides an
AC'97 front panel audio module, refer to the instructions on how to activate AC'97 functioninality
via the audio software in Chapter 5, "
Configuring 2/4/5.1/7.1-Channel Audio."
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When using an AC'97 front panel audio module, you can use either the front or the back
panel audio connectors, but not both at the same time.
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ftp://download.gigabyte.ru/manual/mo...5-(d)s3l_e.pdf
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