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Chapter 4: Motherboard Connections
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 table below for pin definitions.
OH/Fan Fail LED
Pin Definitions (JF1)
Pin#
Definition
7
Vcc/Blue UID LED
8
OH/Fan Fail LED
OH/Fan Fail Indicator
Status
Pin#
Definition
Off
Normal
On
Overheat
Flashing
Fan Fail
NIC1/NIC2 (LAN1/LAN2)
The NIC (Network Interface Controller) LED connection for LAN port 1 is located on pins
11 and 12 of JF1, and the LED connection for LAN Port 2 is on pins 9 and 10. NIC1 LED
and NIC2 LED are 2-pin NIC LED headers. Attach NIC LED cables to NIC1 and NIC2 LED
indicators to display network activities. Refer to the table below for pin definitions.
LAN1/LAN2 LED
Pin Definitions (JF1)
Pin#
Definition
9/11
3.3V Stby
10/12
NIC2/NIC1 Active LED
