MSI 865PE NEO2-LS User Guide - Page 38
Fan Power Connectors: CPUFAN1/SFAN1/NBFAN1 - northbridge fan
UPC - 816909003673
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Page 38 highlights
Hardware Setup Fan Power Connectors: CPUFAN1/SFAN1/NBFAN1 The CPUFAN1 (processor fan), SFAN1 (system fan) and NBFAN1 (NorthBridge Chipset fan) support system cooling fan with +12V. It supports three-pin head connector. When connecting the wire to the connectors, always take note that the red wire is the positive and should be connected to the +12V, the black wire is Ground and should be connected to GND. If the mainboard has a System Hardware Monitor chipset on-board, you must use a specially designed fan with speed sensor to take advantage of the CPU fan control. GND +12V SENSOR CPUFAN1 GND +12V Sensor NBFAN1 B ATT + GND +12V NC SFAN1 MSI Reminds You... 1. Always consult the vendors for proper CPU cooling fan. 2. CPUFAN1 supports the fan control. You can install Core Center utility that will automatically control the CPU fan speed according to the actual CPU temperature. 2-17