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Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 25)
1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis
must support HDA to function correctly. Please follow the instructions in our
manual and chassis manual to install your system.
2. If you use an AC'97 audio panel, please install it to the front panel audio header by
the steps 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 the HD audio panel only. You don't need to
connect them for the AC'97 audio panel.
E. To activate the front mic, go to the "FrontMic" Tab in the Realtek Control panel
and adjust "Recording Volume".
Chassis Fan Connectors
(4-pin CHA_FAN1)
(see p.1, No. 2)
(4-pin CHA_FAN2)
(see p.1, No. 11)
CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.1, No. 3)
(3-pin CPU_FAN2)
(see p.1, No. 4)
GND
PRESENCE#
MIC_RET
OUT_RET
1
OUT2_L
J_SENSE
OUT2_R
MIC2_R
MIC2_L
FAN_SPEED_CONTROL
FAN_SPEED
FAN_VOLTAGE
GND
GND
FAN_VOLTAGE_CONTROL
FAN_SPEED
FAN_SPEED_CONTROL
FAN_SPEED
FAN_VOLTAGE_CONTROL
FAN_SPEED_CONTROL
GND
FAN_SPEED
FAN_VOLTAGE
GND
This header is for
connecting audio devices
to the front audio panel.
Please connect fan cables
4
to the fan connector and
3
2
match the black wire to
1
the ground pin.
This motherboard pro-
vides a 4-Pin CPU fan
(Quiet Fan) connector.
If you plan to connect a
3-Pin CPU fan, please
connect it to Pin 1-3.
H270M Pro4
21
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