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Pin
Signal
1
Reset Button +
2
Speaker +
3
Reset Button -
4
-
5
HDD LED +
6
Internal Speaker -
7
HDD LED -
8
Speaker -
Internal Buzzer is enabled when Pin6-8 is shorted.
Figure 19: Front Panel 2 Pin Header FP2
Table 24: Pin Assignment FP2
Pin
Signal
1
Power LED +
2
Power Button +
3
-
4
Power Button -
5
Power LED -
6
-
7
-
8
SMBus Data
9
GND
10
SMBus Clock
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Description
System reset button (+)
External system warning speaker (+)
System reset button (-)
No connection
HDD activity LED (+). The LED lights up or flashes when data is
ready from or written to the HDD.
Internal system warning speaker (-)
HDD activity LED (-).
External system warning speaker (-)
+
PLED
-
BAT_LOW#
GND
Description
System Power LED (+). The LED lights up when users turn on the
system power, and blinks when the system is in sleep mode.
System power button (+). Pressing the power button turns the
system on or puts the system in sleep or soft-off mode
depending on the operating system settings. Pressing the
power switch for more than four seconds while the system
turns from ON to OFF.
No connection
System power button (-).
System Power LED (-).
No connection
No connection
System management bus bidirectional data line
Ground
System management bus bidirectional clock line
1
2
+
PWRBTN
-
SM_ALERT#
SM_DATA
9
10
SM_CLK
3.5"-SBC-WLU - User Guide, Rev. 1.0
Note
Note
// 35
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