Figure 3-16 Fan Connector Locations; Table 3-17 Fan Connector Pin Definitions (Fan1/2 - Fan7/8) - Silicon Graphics Altix XE250 User Manual

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Fan 5
Fan 6
Figure 3-16 Fan Connector Locations
Table 3-17
Fan Connector Pin Definitions (Fan1/2 - Fan7/8)
There are eight fan connectors on the serverboard, all of which are
4-pin fans. However, pins 1-3 of the fan connectors are backward
compatible with the traditional 3-pin fans. The onboard fan speeds
are controlled by Thermal Management (via Hardware
Monitoring) under the Advanced Section in the BIOS. The default
is disabled.
Fan 7
CPU 1
CPU 2
Notes
Node Board Connector Pin Definitions
Fan 1
Fan 2
Fan 3
Fan 8
Fan 1
Fan Connector Pin Definitions
Fans 1-8
Pin# Definition
1 Ground (Black)
2 +12V (Red)
3 Tachometer
4 PWM Control
3-65