Gigabyte GA-P55-UD4P User Manual Page 24

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Hardware Installation - 24 -
3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 4-pin (SYS_FAN2) and two 3-pin (SYS_
FAN1) system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headers possess a
foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation
(the black connector wire is the ground wire). The motherboard supports CPU fan speed control, which
requires the use of a CPU fan with fan speed control design. For optimum heat dissipation, it is recom-
mended that a system fan be installed inside the chassis.
Be sure to connect fan cables to the fan headers to prevent your CPU, Chipset and system
from overheating. Overheating may result in damage to the CPU/Chipset or the system may
hang.
These fan headers are not congurationjumper blocks. Do notplace a jumper cap on the
headers.
CPU_FAN:
PinNo. Denition
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
SYS_FAN2:
PinNo. Denition
1 GND
2 +12V / Speed Control
3 Sense
4 Reserve
SYS_FAN1/PWR_FAN:
PinNo. Denition
1 GND
2 +12V
3 Sense
PinNo. Denition
1 GND
2 +12V
3 NC
6) PCH_FAN (Chipset Fan Header)
Connect the Chipset fan cable to this header. The fan header has a foolproof insertion design. When
connecting a fan cable, be sure to connect it in the correct orientation. Most fans are designed with color-
coded power connector wires. A red power connector wire indicates a positive connection and requires a
+12V voltage. The black connector wire is the ground wire.
1
CPU_FAN
SYS_FAN2
PWR_FAN
1
1
1
SYS_FAN1
1
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