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IMB205 LGA1156 ATX Motherboard User’s Manual
Jumpers and Connectors
29
2.4.19 Front Panel Connector (CN35)
Power LED
This 3-pin connector, designated at
Pins 1
and
5
of
CN35
,
connects the system power LED indicator to its respective
switch on the case.
Pin 1
is +, and
pin 5
is assigned as -. The
Power LED lights up when the system is powered ON.
Pin 3
is defined as GND.
External Speaker and Internal Buzzer Connector
Pins 2, 4, 6,
and
8 of CN35
connect to the case-mounted
speaker unit or internal buzzer. When connecting to an internal
buzzer and
Short pin2 and pin4
. When connecting an external
speaker, set these jumpers to
Open
and install the speaker
cable on
pin 8
(+) and
pin 2
(-).
ATX Power On/Off Button
This 2-pin connector, designated at
Pins 9
and
10
of
CN35
,
connects the power button of the front panel to the
IMB205
-
allowing user to control the power on/off state of the power
supply.
System Reset Switch
Pins 11
and
12
of
CN35
connect to the case-mounted reset
switch and allow rebooting of your computer instead of turning
OFF the power switch. This is a preferred method of rebooting
in order to prolong the life of the system
’
s power supply.
HDD Activity LED
This connector extends to the hard drive activity LED on the
control panel. This LED will flash when the HDD is being
accessed.
Pins
13
and
14 of CN35
connect the hard disk drive
and the front panel HDD LED.
Pins 13
is -, and
pin 14
is
assigned as +.