Acer Aspire X3990 Service Manual page 92

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Front Panel Header
The front panel header (F_PANEL) provides a standard set of switch and LED headers commonly found on
ATX or micro-ATX cases. Refer to the table below for information:
Pin
Signal
1
VCC
3
HDD_LED
5
GND
7
HWRST_L
9
F_PANEL_DET
11
NC
13
NC
Chapter 5
Function
5V
Hard disk LED
Ground
Reset
FRONT PANEL
DETECT
Reserved
Reserved
Pin
Signal
2
GLED0
4
GLED1
6
PWRSW
8
GND
10
KEY
12
VCC
14
F_PANEL_LED
Function
MSG LED
MSG LED
POWER SWITCh
Ground
NO PIN
5V
FRONT PANEL
LED
84

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