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A 34-pin header is provided for cabling to the system front panel. The header contains reset, NMI, power control buttons, and LED indicators. The table below details the pin-outs of the header.
| Pin |
Signal Name |
Pin |
Signal Name |
| 1 |
Power LED Anode |
2 |
5VSB |
| 3 |
KEY |
4 |
Fan Fail LED Anode |
| 5 |
Power LED Cathode |
6 |
Fan Fail LED Cathode |
| 7 |
HDD Activity LED Anode |
8 |
Power Fault LED Anode |
| 9 |
HDD Activity LED Cathode |
10 |
Power Fault LED Cathode |
| 11 |
Power Switch |
12 |
NIC#1 Activity LED Anode |
| 13 |
GND (Power Switch) |
14 |
NIC#1 Activity LED Cathode |
| 15 |
Reset Switch |
16 |
I2C SDA |
| 17 |
GND (Reset Switch) |
18 |
I2C SCL |
| 19 |
ACPI Sleep Switch |
20 |
Chassis Intrusion |
| 21 |
GND (ACPI Sleep Switch) |
22 |
NIC#2 Activity LED Anode |
| 23 |
NMI to CPU Switch |
24 |
NIC#2 Activity LED Cathode |
| 25 |
KEY |
26 |
KEY |
| 27 |
ID LED Anode |
28 |
System Ready Anode |
| 29 |
ID LED Cathode |
30 |
System Ready Cathode |
| 31 |
ID Switch |
32 |
HDD Fault Anode |
| 33 |
GND (ID Switch) |
34 |
HDD Fault Cathode | |
This applies to:
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