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Chapter 2
Front Panel Power Connector: CN4
The mainboard provides a Front Panel connector for electrical connec-
tion to the Front Panel switches and LEDs. CN4 is compliant with Intel
Panel I/O Connectivity Design Guide.
PIN
1
2
3
4
5
6
7
8
9
CPU Fan Connector: CN15
The CPU Fan connector supports system cooling fans with +12V that is
controlled by PWM. When connecting the wire to the three-pin head connectors,
always note that the red wire is the positive and should be connected to the
+12V (that is controlled by PWM), the black wire is Ground and should be
connected to GND.
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
2-14
1
2
HDD
LED
Reset
Switch
9 10
CN4
CN4 Pin Definition
SIGNAL
DESCRIPTION
HD_LED_P
Hard disk LED pull-up
FP PWR/SLP
MSG LED pull-up
HD_LED_N
Hard disk active LED
FP PWR/SLP
MSG LED pull-up
RST_SW_N
Reset Switch low reference pull-down to GND
PWR_SW_P
Power Switch high reference pull-up
RST_SW_P
Reset Switch high reference pull-up
PWR_SW_N
Power Switch low reference pull-down to GND
RSVD_DNU
Reserved. Do not use.
CN15
GND
SENSOR
Power LED
Power
Switch
+12V
Front
®
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