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Chapter 4: Motherboard Connections
NIC1/NIC2 (LAN1/LAN2 or LAN3/LAN4)
The Network Interface Controller (NIC) LED connection for LAN port 1 or port 3 is located on
pins 11 and 12 of JF1, while LAN port 2 or port 4 is on pins 9 and 10. Attach the NIC LED
cables here to display network activity. Refer to the table below for pin definitions.
LAN1/LAN2 or
LAN3/LAN4 LED
Pin Definitions (JF1)
Pin# Definition
9/11
Vcc
10/12
NIC2 Active LED/
NIC1 Active LED
HDD LED
The HDD LED connection is located on pins 13 and 14 of JF1. Attach a cable to pin 14 to
show hard drive activity status. Refer to the table below for pin definitions.
HDD LED
Pin Definitions (JF1)
Pins
Definition
13
3.3V Stdby
14
HDD Active
Power LED
The Power LED connection is located on pins 15 and 16 of JF1. Refer to the table below
for pin definitions.
Power LED
Pin Definitions (JF1)
Pins
Definition
15
3.3V
16
PWR LED
NMI Button
The non-maskable interrupt (NMI) button header is located on pins 19 and 20 of JF1. Refer
to the table below for pin definitions.
NMI Button
Pin Definitions (JF1)
Pins
Definition
19
Control
20
Ground
