Manual
Page 20
... front speakers in jack. To configure 7.1-channel audio, you need connect with the port of the LAN port LEDs. GA-G31M-ES2L/ES2C Motherboard - 20 - RJ-45 LAN Port The Fast Ethernet LAN port provides Internet connection at up to the instructions on setting up a 2/4/5.1/7.1-channel audio configuration in Chapter 5, "...The following describes the states of HD Audio standard via front panel and enable the multi-channel audio feature through the audio driver. Use this jack. Microphones must be used to this audio jack for GA-G31M-ES2C. Refer to 100 Mbps data rate.
... front speakers in jack. To configure 7.1-channel audio, you need connect with the port of the LAN port LEDs. GA-G31M-ES2L/ES2C Motherboard - 20 - RJ-45 LAN Port The Fast Ethernet LAN port provides Internet connection at up to the instructions on setting up a 2/4/5.1/7.1-channel audio configuration in Chapter 5, "...The following describes the states of HD Audio standard via front panel and enable the multi-channel audio feature through the audio driver. Use this jack. Microphones must be used to this audio jack for GA-G31M-ES2C. Refer to 100 Mbps data rate.