MSI 745 ULTRA User Guide - Page 32
Fan Power Connectors: CFAN1/SFAN1 - processor support
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Chapter 2 Fan Power Connectors: CFAN1/SFAN1 The CFAN1 (processor fan) and SFAN1 (system 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 CFAN1 GND +12V SENSOR SFAN1 Note: 1. Always consult the vendor for proper CPU cooling fan. 2. CPU Fan supports the fan control. You can install the PC Alert utility that will automatically control the CPU Fan speed according to the actual CPU temperature. 2-14