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98 Technical Reference
Main Power Connector
Table 9. Main Power Connector Pinout
Pin Signal Pin Signal
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 COM 15 COM
4 +5V 16 PS_ON
5 COM 17 COM
6 +5V 18 COM
7 COM 19 COM
8 PWR_OK 20 -5V
9 +5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 COM
Fan Interface
The server board has five 3-pin fan connectors that are shrouded and keyed. Two are located next
to the processor sockets (one for each processor); each is intended to be used for a tachometer fan
heat sink.
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NOTE
Fan connectors 2A and 2B can not be used simultaneously. If you plug fans
into both connectors, the fans will not operate properly.
Table 10. Fan Connector Pinout
Pin Signal
1 GND
2 +12V
3 Fan Sensor