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Chapter 4: Motherboard Connections
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 4). 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.
Power Button
Pin Definitions (JF1)
Pin#
Definition
1
Signal
2
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.
Reset Button
Pin Definitions (JF1)
Pin#
Definition
3
Reset
4
Ground
Fan Fail and UID LED
Connect an LED cable to pins 7 and 8 of the front control panel to use the Overheat/Fan
Fail LED connections. The LED on pin 8 provides warnings of overheat or fan failure. Refer
to the tables below for pin definitions and status.
OH/Fan Fail LED
Pin Definitions (JF1)
Pin#
Definition
7
Blue LED
8
OH/Fan Fail LED
OH/Fan Fail Indicator
Status
State
Status
Off
Normal
On
Overheat
Flashing Fan Fail
Power Fail LED
The Power Fail LED connection is located on pins 5 and 6 of JF1. Refer to the table below
for pin definitions.
Power Fail LED
Pin Definitions (JF1)
Pin#
Definition
5
3.3V
6
PWR Supply Fail
