Fan Header
The A4SAN-H/-E/-L motherboard has one 4-pin fan header. Although pins 1-3 of the fan headers are backward compatible with the traditional 3-pin fans, we recommend you use 4-pin fans to take advantage of the fan speed control via Pulse Width Modulation through the thermal management. This allows the fan speeds to be automatically adjusted based on the motherboard temperature.
For a detailed diagram of the A4SAN-H/-E/-L/-WOHS motherboard, see the layout under Quick Reference.
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4-pin Fan Header Pin Definitions: Four Total |
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|---|---|
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Pin# |
Definition |
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1 |
GND (Black) |
|
2 |
+12 V (Red) |
|
3 |
Tachometer |
|
4 |
PWM Control |