Pinout for the motherboard fan connector of an HP ML350 G6 server
| Pin Number |
Pin Name |
Description |
|---|---|---|
| 1 (Green) | PWM | PWM Signal |
| 2 (Yellow) | RPM | Fan Tachometer |
| 3 (Red) | +12V | Fan Power |
| 4 (Black) | Ground | Fan Ground |
| 5 (Black) | Sensor | HP Installation Sensor |
Note:
Pin 5 is looped back to pin 4 and is required to install aftermarket fans in this server. Without this, the server will throw a self-test error and refuse to boot because it will detect a cooling solution failure.
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