MSI 790FX GD70 User Guide - Page 27

Hardware Setup Fan Power Connectors: CPUFAN1, SYSFAN1/ 2/ 3/ 4 The fan power connectors support system cooling fan with +12V. W hen connecting the wire to the connectors, always 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 motherboard 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 +1 2V SE NS OR CONTROL SE NS OR +1 2V GND CPUFAN1 GND +1 2V SE NS OR SYSFAN1/3/4 SYSFAN2 Important 1. Please refer to the recommended CPU fans at processor's official website or consult the vendors for proper CPU cooling fan. 2. CPUFAN1 supports fan control. You can install Overclocking Center utility that will automatically control the CPU fan speed according to the actual CPU temperature. 3. Fan cooler set with 3 or 4 pins power connector are both available for CPUFAN1. Chassis Intrusion Connector: JCI1 This connector connects to the chassis intrusion switch cable. If the chassis is opened, the chassis intrusion mechanism will be activated. The system will record this status and show a warning message on the screen. To clear the warning, you must enter the BIOS utility and clear the record. GND CINTRU 2 1 2-13