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Chapter 2: Hardware information
5. CPU, Chassis, and Power Fan Connectors
(3-pin CPU_FAN, PWRFAN, CH_FAN)
The three fan connectors support cooling fans of 350mA (4.2 Watts) or
a total of 1A (12W) at +12V. Orient the fans so that the heat sink fins
allow air flow to go across the onboard heat sinks instead of the
expansion slots. The fan wiring and plug may vary depending on the
fan manufacturer. Connect the fan cable to the connector matching the
black wire to the ground pin.
Do not forget to connect the fan cables to the fan connectors. Lack of
sufficient air flow within the system may damage the motherboard
components. These are not jumpers! DO NOT place jumper caps on
the fan connectors!
P4B266
®
P4B266 12-Volt Fan Connectors
CPU_FAN
PWRFAN
CH_FAN
GND
Rotation
+12V
GND
Rotation
+12V
GND
Rotation
+12V