Product Description
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1.9 Audio Subsystem
The board supports Intel HD Audio via the Realtek ALC283 audio codec. The audio subsystem
supports the following features:
• Analog line-out/Analog Headphone/Analog Microphone jack on the front panel
• High Definition Audio via a stereo microphone/headphone jack on the back panel
• Support for 44.1 kHz/48 kHz/96 kHz/192 kHz sample rates on all analog outputs
• Support for 44.1 kHz/48 kHz/96 kHz sample rates on all analog inputs
• Back Panel Audio Jack Support (see Figure 5 for 3.5 mm audio jack pin out):
Speakers only
Headphones only
Microphone only
Combo Headphone/Microphone
Figure 5. 4-Pin 3.5 mm (1/8 inch) Audio Jack Pin Out
NOTE
The analog circuit of the back panel audio connector is designed to power headphones or
amplified speakers only. Poor audio quality occurs if passive (nonamplified) speakers are
connected to this output.