EVGA 121-BL-E756 - Manual (Page 27)

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Fan Connections
There are six fan connections on the motherboard. The fan speed can be
detected and viewed in the
PC Health Status section of the CMOS Setup. The
fans are automatically turned off after the system enters S3, S4 and S5 mode.
Note: the CPU fan
cable can be either
a 3-pin or a 4-pin
connector. Connect
a 3-pin connector
to pins 1, 2, and 3
on the motherboard
connector.
CPU Fan
CPU Fan
Control
Sense
+12V
Ground
+12V