ASROCK Fatal1ty B450 Gaming K4 Serie Manual De Instrucciones página 26

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7
Please note that only one cable should be used at a time in this step.
If you select AMD_FAN_LED1, please install ASRock utility "ASRock Polychrome LED".
If you select USB connector, please install AMD utility "SR3 Settings Software".
*The diagram shown here are for reference only. Please refer to page 32 for the orientation of
AMD Fan LED Header (AMD_FAN_LED1).
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+12V
or