ASROCK J3455B-ITX Quick Start Manual page 18

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 con-
nect 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 Speaker Header
(4-pin SPEAKER1)
(see p.1, No. 8)
Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.1, No. 7)
CPU Fan Connector
(3-pin CPU_FAN1)
(see p.1, No. 2)
ATX Power Connector
(24-pin ATXPWR1)
(see p.1, No. 3)
16
Please connect the chassis
DUMMY SPEAKER
speaker to this header.
1
+5V DUMMY
Please connect fan cable
GND
FAN_VOLTAGE
to the fan connector and
CHA_FAN_SPEED
match the black wire to
the ground pin.
Please connect the CPU
GND
FAN_VOLTAGE
fan cable to the connector
FA N_SPEED
and match the black wire
to the ground pin.
This motherboard pro-
12 24
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
1 13
13.