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Chapter 4: Motherboard Connections
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
Ground
4
Reset Button
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. To turn off the power in the suspend mode, press the button
for at least four seconds. Refer to the table below for pin definitions.
Power Button
Pin Definitions (JF1)
Pin#
Definition
1
Ground
2
Power Button
NIC1/NIC2 (LAN1/LAN2) LED
The NIC (Network Interface Controller) LED connection for LAN1/LAN2 is located on pins 9/11
and 10/12 of JF1. Attach an LED indicator to this header to display network activity. Refer to
the table below for pin definitions.
NIC1/NIC2 LED
Pin Definitions (JF1)
Pin#
Definition
9/11 NIC2/NIC1 LED
10/12 Vcc
Overheat (OH)/Fan Fail LED
Connect an LED cable to OH/Fan Fail connections on pins 7 and 8 of JF1 to provide warnings
for chassis overheat/fan failure. Refer to the tables below for pin definitions.
OH/Fan Fail LED
Pin Definitions (JF1)
Pin#
Definition
7
OH/Fan Fail LED
8
Vcc
OH/Fan Fail Indicator
Pin Definitions (JF1)
State
Definition
Off
Normal
On
Overheat
Flashing Fan Fail