Fan Interface Connector; Hard Drive Led Connector; External Wake On Lan Connector; Chassis Intrusion Switch Connector - NEC NEAX Express Service & Reference Manual

Fan Interface Connector

The system board has five 3-pin, shrouded, and keyed fan connectors. Two are located
next to the processor sockets (one for each processor) for a tachometer fan heat sink.
Note:
Note:
simultaneously. If you plug fans into both connectors, the fans will
not operate properly.
Pin Signal
1 GND
2 +12V
3 Fan Sensor

Hard Drive LED Connector

Pin Signal
1 Current limited +5 VDC
2 Key
3 HD activity LED
4 Current limited +5 VDC

External Wake ON LAN Connector

Pin Signal
1 +5VSTNDBY
2 Ground
3 Control line from NIC

Chassis Intrusion Switch Connector

Pin Signal
1 CHASSIS_INTRUSION_FP
2 Ground
Heatsink fans are not used with some processors.
Fan connectors 2A and 2B can not be used
Fan Connector Pinout
Hard Drive LED Connector Pinout
External Wake ON LAN Connector Pinout
Chassis Intrusion Switch Connector Pinout
Connectors E-5