Gigabyte GA-P55-UD4P User Manual page 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.
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.
• 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 configuration jumper blocks. Do not place a jumper cap on the
headers.
Hardware Installation
1
CPU_FAN
1
SYS_FAN2
1
1
SYS_FAN1
PWR_FAN
1
- 24 -
CPU_FAN:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
SYS_FAN2:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 Reserve
SYS_FAN1/PWR_FAN:
Pin No. Definition
1 GND
2 +12V
3 Sense
Pin No. Definition
1 GND
2 +12V
3 NC