Manual
Page 20
... headphone or 2-channel speaker. Use this audio jack for GA-G31M-ES2C. GA-G31M-ES2L/ES2C Motherboard - 20 - Mic In Jack (Pink) The default Mic in jack. To configure 7.1-channel audio, you need connect with the port of the LAN port LEDs. RJ-45 LAN Port The Fast Ethernet LAN port provides Internet connection at up a 2/4/5.1/7.1-channel audio configuration ...data rate. The following describes the states of HD Audio standard via front panel and enable the multi-channel audio feature through the audio driver. Only for line in devices such as an optical drive, walkman, etc.
... headphone or 2-channel speaker. Use this audio jack for GA-G31M-ES2C. GA-G31M-ES2L/ES2C Motherboard - 20 - Mic In Jack (Pink) The default Mic in jack. To configure 7.1-channel audio, you need connect with the port of the LAN port LEDs. RJ-45 LAN Port The Fast Ethernet LAN port provides Internet connection at up a 2/4/5.1/7.1-channel audio configuration ...data rate. The following describes the states of HD Audio standard via front panel and enable the multi-channel audio feature through the audio driver. Only for line in devices such as an optical drive, walkman, etc.