Choose Airflow direction
Attention
3-pin socket is compatible with 4-pin plug but Fan PWM control will not be available.
Ensure your motherboard's fan header can supply enough power for multiple fans. Connect no more thatn 3 fans to a 1A header, 6 fans to a 2A header, and 9 fans to a 3A header. Check your motherboard specifications for details.
In a PC
The speed of P12 Pro PST can be adjusted using PWM signal from the motherboard. Please follow this procedure to adjust the settings on your motherboard.
In a DIY Project
PWM Frequency: Target frequency 25 kHz, acceptable operational range 21 kHz to 28 kHz
Maximum voltage for logic low: VIL = 0.8 V
Absolute maximum current sourced: Imax = 5 mA (short circuit current)
Absolute maximum voltage level: Vmax = 5.25 V (open circuit voltage)
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