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Chapter 4: Motherboard Connections
Figure 4-1. JF1: Control Panel Pins
Front Control Panel
JF1 contains header pins for various control panel connections. Refer to Figure 4-1 below for
the pin locations and definitions of the control panel buttons and LED indicators.
All JF1 wires have been bundled into a single cable to simplify this connection. Verify that
the red wire plugs into pin 1 as marked on the motherboard. The other end connects to the
control panel PCB board.
Power Button
Pin Definitions (JF1)
Pins
Definition
1
Signal
2
Ground
Power Button
The Power Button connection is located on pins 1 and 2 of JF1. Momentarily contacting both
pins will power on/off the system. This button can also be configured to function as a suspend
button with a setting in the BIOS (see Chapter 6). To turn off the power when the system is
in suspend mode, press the button for 4 seconds or longer. Refer to the table below for pin
definitions.
Reset Button
Pin Definitions (JF1)
Pins
Definition
3
Reset
4
Ground
Reset Button
The Reset Button connection is located on pins 3 and 4 of JF1. Attach it to a hardware reset
switch on the computer case to reset the system. Refer to the table below for pin definitions.
Power Button
UID LED
NIC1 Active LED
Reset Button
HDD LED
PWR LED
Reset
PWR
3.3V Stby
3.3V Stby
Ground
19
X
Ground
X
3.3V Stby
20
1
2
Ground
Power Fail LED
NIC2 Active LED
NMI
3.3V
3.3V
OH/Fan Fail LED
UID SW
