ASRock X79 Extreme4-M USB 3.0 Header Besides two default USB, Ports on the I/O panel, there is

USB 3.0 Header	Besides two default USB 3.0
(19-pin USB3_2_3)	ports on the I/O panel, there is
(see p.12 No. 11)	one USB 3.0 header on this
	motherboard. This USB 3.0
	header can support two USB
	3.0 ports.
Infrared Module Header	This header supports an
(5-pin IR1)	optional wireless transmitting
(see p.12 No. 12)	and receiving infrared module.
Consumer Infrared Module Header	This header can be used to
(4-pin CIR1)	connect the remote
(see p.12 No. 14)	controller receiver.
Front Panel Audio Header	This is an interface for front
(9-pin HD_AUDIO1)	panel audio cable that allows
(see p.12 No. 33)	convenient connection and
	control of audio devices.

1.High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instruction in our manual and chassis manual to install your system.

2.If you use AC’97 audio panel, please install it to the front panel audio header as below:

A.Connect Mic_IN (MIC) to MIC2_L.

B.Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.

C.Connect Ground (GND) to Ground (GND).

D.MIC_RET and OUT_RET are for HD audio panel only. You don’t need to connect them for AC’97 audio panel.

E.To activate the front mic.

For Windows® XP / XP 64-bit OS:

Select “Mixer”. Select “Recorder”. Then click “FrontMic”.

For Windows® 7 / 7 64-bit / VistaTM / VistaTM 64-bit OS:

Go to the "FrontMic" Tab in the Realtek Control panel. Adjust “Recording Volume”.

33