ASROCK SP55M PRO -, Installation Manual, Page: 24 / 204

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ASRock P55M Pro Motherboard
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Chassis and Power Fan Connectors Please connect the fan cables
(4-pin CHA_FAN1)
to the fan connectors and
(see p.2 No. 20)
match the black wire to the
ground pin.
(3-pin PWR_FAN1)
(see p.2 No. 4)
System Panel Header This header accommodates
(9-pin PANEL1)
several system front panel
(see p.2 No. 23)
functions.
Front Panel Audio Header This is an interface for front
(9-pin HD_AUDIO1)
panel audio cable that allows
(see p.2 No. 35)
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. Enter BIOS Setup Utility. Enter Advanced Settings, and then select
Chipset Configuration. Set the Front Panel Control option from
[Auto] to [Enabled].
Internal Audio Connectors This connector allows you
(4-pin CD1)
to receive stereo audio input
(CD1: see p.2 No. 34)
from sound sources such as
a CD-ROM, DVD-ROM, TV
tuner card, or MPEG card.
CD1
Chassis Speaker Header Please connect the chassis
(4-pin SPEAKER 1)
speaker to this header.
(see p.2 No. 21)