Fan Connector; Power Supply Fan Connector - Fujitsu D3071-S Technotes

Interfaces & Connectors

3.7 Fan Connector

Note:
3pin mode (voltage controlled): Supported by Fan3 only (3pin/4pin mode selectable in BIOS Setup)!
If a 3-wire fan is connected, but BIOS Setup is set to "4-Pin" (= Default) the fan will operate at full speed (=12V).
In 3-wire mode, the default minimum operating voltage is set to ~ 6V.

3.8 Power Supply Fan Connector

Note: This feature is not supported by standard ATX power supplies!
Fan4 and PS Fan connector must not be used simultaneously!
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TechNotes D307x-S V2.0 Page 20 of 56
Note:
Fans must never be attached or
removed while the system is
powered. Mainboard may be
damaged!
www.ts.fujitsu.com/mainboards