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Chapter 4: Motherboard Connections
Power LED
The Power LED connection is located on pins 15 and 16 of JF1.
Power LED
Pin Definitions (JF1)
Pin#
Definition
15
3.3V
16
Power LED
NMI Button
The non-maskable interrupt button header is located on pins 19 and 20 of JF1.
NMI Button
Pin Definitions (JF1)
Pin#
Definition
19
Control
20
Ground
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. Attach the NIC
LED cables here to display network activity.
LAN1/LAN2 LED
Pin Definitions (JF1)
Pin#
Definition
9
NIC2 Activity LED
10
NIC2 Link LED
11
NIC1 Activity LED
12
NIC1 Link LED
HDD LED/UID Switch
The HDD LED/UID Switch connection is located on pins 13 and 14 of JF1. Attach a cable to
Pin 14 to show hard drive activity status. Attach a cable to Pin 13 to use UID switch.
HDD LED
Pin Definitions (JF1)
Pin#
Definition
13
3.3V Standby/UID Switch
14
HDD Active
