Front Panel Connector
Computer motherboards often provide a connector to bring microphone and headphone signals to the computer's front panel. Intel provides a specification for that header; the signal assignments are different for AC'97 and Intel High Definition Audio headers.
Read more about this topic: AC'97
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“The dandy should aspire to be uninterruptedly sublime. He should live and sleep in front of a mirror.”
—Charles Baudelaire (1821–1867)