ASRock A75 Pro4-M manual Infrared Module Header

Infrared Module Header	+5VSB
	IRTX
(5-pin IR1)	DUMMY
(see p.12 No. 26)	1
	GND
	IRRX

This header supports an optional wireless transmitting and receiving infrared module.

Consumer Infrared Module Header	This header can be used to
(4-pin CIR1)	connect the remote
(see p.12 No. 23)	controller receiver.

Front Panel Audio Header			PRESENCE#
		GND
(9-pin HD_AUDIO1)				MIC_RET
						OUT_RET
(see p.12 No. 30)	1
						OUT2_L
					J_SENSE
				OUT2_R
			MIC2_R
		MIC2_L

This is an interface for the front panel audio cable that allows 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”.

System Panel Header	This header accommodates
(9-pin PANEL1)	several system front panel
(see p.12 No. 17)	functions.

Connect the power switch, reset switch and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables.

PWRBTN (Power Switch):

Connect to the power switch on the chassis front panel. You may con- figure the way to turn off your system using the power switch.

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