25
ASRock H77M-ITX Motherboard
English
USB 3.0 Header
Besides two default USB 3.0
(19-pin USB3_3_4)
ports on the I/O panel, there is
(see p.2, No. 12)
one USB 3.0 header on this
motherboard. This USB 3.0
header can support two USB 3.0
ports.
Front Panel Audio Header
This is an interface for front
(9-pin HD_AUDIO1)
panel audio cable that allows
(see p.2, No. 15)
convenient connection and
control of audio devices.
J_SENSE
OUT2_L
1
MIC_RET
PRESENCE#
GND
OUT2_R
MIC2_R
MIC2_L
OUT_RET
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 / Vista
TM
/ Vista
TM
64-bit OS:
Go to the “FrontMic” Tab in the Realtek Control panel. Adjust
“Recording Volume”.
1
DUMMY
IntA_P1_D+
IntA_P1_D-
GND
IntA_P1_SSTX+
IntA_P1_SSTX-
GND
IntA_P1_SSRX+
IntA_P1_SSRX-
Vbus
IntA_P0_D+
IntA_P0_D-
GND
IntA_P0_SSTX+
IntA_P0_SSTX-
GND
IntA_P0_SSRX+
IntA_P0_SSRX-
Vbus
Consumer Infrared Module Header
This header can be used to
(4-pin CIR1)
connect the remote
(see p.2 No. 10)
controller receiver.
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