ZALMAN CNPS11X Extreme User Manual page 12

⑦ Connect the cooler's 4-pin connector to the motherboard's CPU Fan
header.
Caution
Please make sure that PWM Control Mode is activated in the
motherboard's BIOS settings.
Tip
[CNPS11X Extreme Only]
For Quiet Mode, please connect RC24P to the Fan Connector.
12
Motherboard Connector
RC24P
(Fan RPM resistor)
Motherboard Connector
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