ASRock P75 Pro3 manual USB 3.0 Header, Pin USB323 see p.13, No

USB 3.0 Header

(19-pin USB3_2_3) (see p.13, No. 6)

Vbus

IntA_P4_SSRX-

IntA_P4_SSRX+

GND

IntA_P4_SSTX-

IntA_P4_SSTX+

GND

IntA_P4_D-

IntA_P4_D+

Vbus

IntA_P5_SSRX- IntA_P5_SSRX+

GND

IntA_P5_SSTX- IntA_P5_SSTX+

GND

IntA_P5_D-

IntA_P5_D+

DUMMY

Besides two default USB 3.0 ports on the I/O panel, there is one USB 3.0 header on this motherboard. This USB 3.0 header can support two USB 3.0 ports.

Infrared Module Header	IRTX
(5-pin IR1)	+5VSB
	DUMMY
(see p.13, No. 20)	1
	GND
	IRRX

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

Consumer Infrared Module Header

(4-pin CIR1) 1

GND

IRTX

(see p.13, No. 19)IRRX

ATX+5VSB

This header can be used to connect the remote controller receiver.

Front Panel Audio Header		GND
(9-pin HD_AUDIO1)			PRESENCE#
				MIC_RET
(see p.13, No. 29)						OUT_RET
	1
						OUT2_L
					J_SENSE
				OUT2_R
			MIC2_R
		MIC2_L

This is an interface for 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”.

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