ASROCK A785GMH 128M - V1.0 User Manual page 29

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. Enter BIOS Setup Utility. Enter Advanced Settings, and then select
Chipset Configuration. Set the Front Panel Control option from
[Auto] to [Enabled].
System Panel Header
(9-pin PANEL1)
(see p.13 No. 18)
Chassis Speaker Header
(4-pin SPEAKER 1)
(see p.13 No. 19)
Chassis and Power Fan Connectors
(3-pin CHA_FAN1)
(see p.13 No. 13)
(3-pin PWR_FAN1)
(see p.13 No. 34)
CPU Fan Connector
FAN_SPEED_CONTROL
(4-pin CPU_FAN1)
CPU_FAN_SPEED
(see p.13 No. 3)
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
PLED+
This header accommodates
PLED-
PWRBTN#
several system front panel
GND
functions.
1
DUMMY
RESET#
GND
HDLED-
HDLED+
Please connect the chassis
1
SPEAKER
speaker to this header.
DUMMY
DUMMY
+5V
GND
+12V
CHA_FAN_SPEED
PWR_FAN_SPEED
+12V
GND
Please connect the CPU fan
4 cable to this connector and
3
+12V
2
match the black wire to the
GND
1
ground pin.
Pin 1-3 Connected
2 9 2 9 2 9 2 9 2 9
Please connect the fan cables
to the fan connectors and
match the black wire to the
ground pin.
3-Pin Fan Installation