: Some models use a smaller, latching 5-pin connector (where one pin is often empty) that will not fit a standard 4-pin motherboard header without an adapter or re-pinning.
To run the fan at 100% fixed speed , you only need to connect Pin 1 (Ground) and Pin 2 (+12V). If the PWM pin (Pin 4) is left "floating" (unconnected), the internal circuitry defaults to maximum speed. foxconn pva092g12h wiring diagram work