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Chapter 4: Motherboard Connections
HDD LED
The HDD LED connection is located on pins 13 and 14 of JF1. Attach a cable to to show
hard drive activity status. Refer to the table below for pin definitions.
HDD LED
Pin Definitions (JF1)
Pin# Definition
13
3.3V Stdby
14
HDD LED
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)
Pin# Definition
15
3.3V
16
PWR LED
NMI Button
The non-maskable interrupt 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
Power Fail LED
Connect an LED cable to Power Fail connections on pins 5 and 6 of JF1 to provide warnings
for a power failure. Refer to the table below for pin definitions.
OH/Fan Fail Indicator
Status
Pin # Definition
5
3.3V
6
PWR Fail LED