Configurar audio del panel frontal REALTEK

https://www.youtube.com/watch?v=g4bTWs0yr3Q

how to use AC97 front panel on HD audio motherboard
http://www.sevenforums.com/sound-audio/47515-realtek-front-panel-audio-mic-not-recognised.html
https://www.youtube.com/watch?v=9wAHfjD2v78