DFI-ITOX G4S300-B User Manual page 49

2.6.9 Chassis Fan and Second Fan Connectors
The chassis fan connector (J19) and second fan connector (J15) are
used to connect cooling fans. The cooling fans will provide adequate
airflow throughout the chassis to prevent overheating the CPU and
system board components.
Hardware Installation
Power
Ground
N. C.
1 3
Second fan
Chassis fan
3 1
N. C. Ground
Power
2
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