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Chassis FAN Connector (+12V)
(4-pin CHA_FAN1)
(see p. 7, No. 27; p. 9, No. 28)
The board offers three 4-pin chassis fan (Smart Fan) connectors which are compatible with
3-pin chassis fan. If you connect a 3-pin chassis fan to the chassis fan connector on this moth-
erboard, please connect it to pin 1-3. The maximum current is 1A.
Front Panel Audio Header
(8-pin HD_AUDIO1)
(see p. 7, No. 30; p. 9, No. 31)
This is line out/microphone interface for front panel audio cable that allows jack detection,
convenient connection and control of audio devices.
4-pin ATX PWR Connector
(4-pin DC_4PIN1)
(see p. 7, No. 31; p. 9, No. 32)
Please connect a DC +12V power supply to this connector.
SPDIF Header
(4-pin SPDIF1)
(see p. 7, No. 32; p. 9, No. 33)
SPDIF header, providing SPDIF audio output to HDMI VGA card, allows the system to connect
HDMI Digital TV/projector/LCD devices. Please connect the SPDIF connector of HDMI VGA
card to this header.
IMB-1237_IMB-1238_IMB-X1238
4
1
10
9
2
1
1
2
3
4
1
4
Pin
Signal Name
1
GND
2
+12V
3
CHA_FAN_SPEED
4
FAN_SPEED_CONTROL
Pin
Signal Name
Signal Name
1
MIC2_L
GND
3
MIC2_R
5
OUT2_R
MIC_RET
7
J_SENSE
9
OUT2_L
OUT_RET
Pin
Signal Name
Signal Name
1
GND
GND
3
DC Input
DC Input
Pin
Signal Name
1
+5V
2
3
SPDIF OUT
4
GND
Pin
2
4
6
8
10
Pin
2
4
27
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