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Product Description 
 25
 
1.10  Audio Subsystem 
The onboard audio subsystem consists of the following: 
•  Intel 82801IR (ICH9R) 
•  IDT STAC9271D audio codec 
•  Back panel audio connectors 
•  Component-side audio headers: 
⎯  Intel
®
 High Definition Audio front panel header 
⎯  HD audio link header 
The audio subsystem supports the following features: 
•  Dolby Home Theater support  
•  A signal-to-noise (S/N) ratio of 95 dB  
•  Independent multi-streaming 7.1 audio (using the back panel audio connectors) 
and stereo (using the Intel High Definition Audio front panel header).  
•  ADAT support from the back panel optical S/PDIF port 
 
NOTE 
The use of AC 97 front panel headers is not recommended for use with Microsoft 
Windows Vista. 
 
Table 5 lists the supported functions of the front panel and back panel audio jacks.   
Table 5.  Audio Jack Retasking Support 
 
Audio Jack 
Supports 
Line in? 
Supports 
Line out? 
Supports 
Microphone? 
Supports 
Headphones? 
Front panel – Green 
No 
Yes 
No 
Yes 
Front panel – Pink  
No 
No 
Yes 
No 
Back panel – Blue 
Yes 
Yes 
No 
No 
Back panel – Green 
No 
Yes 
No 
Yes 
Back panel – Pink  
No 
No 
Yes 
No 
Back panel – Black 
No 
Yes 
No 
No 
Back panel - Orange 
No 
Yes 
No 
No