Asus MAXIMUS VI FORMULA User Manual page 65

14. Thermal sensor cable connectors (2-pin OPT_TEMP1/2/3)
These connectors are for temperature monitoring. Connect the thermal sensor cables
to these connectors and place the other ends to the devices which you want to
monitor the temperature. The optional fan 1/2/3 (OPT_FAN1/2/3) can work with the
temperature sensors for a better cooling effect.
The thermal sensor cables are purchased separately.
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