ASROCK B450 Pro4 Manual page 32

Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 26)
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 / Waterpump
Fan Connectors
(4-pin CHA_FAN1/WP)
(see p.1, No. 27)
(4-pin CHA_FAN2/WP)
(see p.1, No. 18)
(4-pin CHA_FAN3/WP)
(see p.1, No. 17)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.1, No. 5)
30
GND
PRESENCE#
MIC_RET
OUT_RET
1
OUT2_L
J_SENSE
OUT2_R
MIC2_R
MIC2_L
FAN_SPEED_CONTROL
CHA_FAN_SPEED
FAN_VOLTAGE
GND
4 3 2 1
FAN_SPEED_CONTROL
CHA_FAN_SPEED
FAN_VOLTAGE
GND
1
GND
2
FAN_VOLTAGE
3 CPU_FAN_SPEED
FAN_SPEED_CONTROL
4
This header is for
connecting audio devices
to the front audio panel.
Please connect fan cables
4
to the fan connectors 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.