Connettori per i PIN dello Speaker AC'97 sulla mainboard

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Case 

1. Case Types
   
   The board should fit not only any MicroATX case but also any ATX case (just change the position of a few standoffs).
   
2. Front Panel Audio
   
   Right now front audio ports of almost all the PC cases are compliant only with AC'97 Audio, while MSI K8NGM2-FID's Front Panel Audio Connector JAUD1 is compliant with Intel HD (High Definition) Audio. For details of these specifications, please refer to Intel Front Panel I/O Connectivity Design Guide (Section 2.3, pp. 19 - 25) in formfactors.org (maintained by Intel). However the board's Front Panel Audio Connector also supports AC'97 Audio module, that is, you can still use your case front audio ports with the standard AC'97 pin assignments, but with a restriction. For your reference, the HD Audio pin assignments and the AC'97 pin assignments are:
   
1. Pin 1 - PORT 1L -MIC (Front panel microphone input signal) 
2. Pin 2 - GND - AUD_GND (Ground) 
3. Pin 3 - PORT 1R - MIC_BIAS (Microphone power) 
4. Pin 4 - PRESENCE# - AUD_GND (usually no connection) 
5. Pin 5 - PORT 2R - FP_OUT_R (Right channel audio signal to front panel) 
6. Pin 6 - SENSE1_RETURN - FP_RETURN_R (Right channel audio signal return from front panel) 
7. Pin 7 - SENSE_SEND - AUD_5V (usually no connection) 
8. Pin 8 - KEY - KEY (No pin) 
9. Pin 9 - PORT 2L - FP_OUT_L (Left channel audio signal to front panel) 
10. Pin 10 - SENSE2_RETURN - FP_RETURN_L (Left channel audio signal return from front panel)
3. 
   To enable the Front Panel Audio Connector to support AC'97 Audio mode, open "Realtek HD Sound Effect Manager" from the control panel or the system tray, then click the "Audio I/O" tab, then click the "Analog Connector Setting" button. In the "Connector Settings" dialog box, check "Disable front panel jack detection". Then "Mute rear panel output when front headphone plugged in" will be automatically disabled. A known restriction is that even if headphones are plugged in the front audio port, main speakers will not be turned off automatically.
   
4. Tips
   
   If your pin connectors from the case are separate 1-pin connectors, I recommend to use a HEADER CONNECTOR 2 X 5 instead. Connecting wires to the motherboard will become far much easier. The same is true for IEEE1394 connector. (FRONTX offers free international shipping.)