ASROCK IMB-151 User Manual page 17

PLED (System Power LED):
Connect to the power status indicator on the chassis front panel. The LED
is on when the system is operating. The LED keeps blinking when the sys-
tem is in S1 sleep state. The LED is off when the system is in S3/S4 sleep
state or powered off (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. The LED
is on when the hard drive is reading or writing data.
The front panel design may differ by chassis. A front panel module mainly
consists of power switch, reset switch, power LED, hard drive activity LED,
speaker and etc. When connecting your chassis front panel module to this
header, make sure the wire assignments and the pin assign-ments are
matched correctly.
3W Audio AMP Output Wafer
(4-pin SPEAKER1)
(see p.8 No. 30)
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.8 No. 34)
1. High Deinition 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
E. To activate the front mic.
1
GND
PRESENCE#
MIC_RET
1
OUT2_R
MIC2_R
MIC2_L
need to connect them for AC'97 audio panel.
Go to the "FrontMic" Tab in the Realtek Control panel. Adjust
"Recording Volume".
This is an interface for front
panel audio cable that allows
OUT_RET
convenient connection and
control of audio devices.
OUT2_L
J_SENSE
17
PIN Signal Name
1 SPK R-
2 SPK R+
3 SPK L+
4 SPK L-