Gigabyte GA-X79-UD3 User Manual - Page 24

CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 Fan Headers - cpu support

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3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (Fan Headers) The motherboard has a 4-pin CPU fan header (CPU_FAN), two 4-pin (SYS_FAN1/SYS_FAN2) and two 3-pin (SYS_FAN3/SYS_FAN4) system fan headers. Most fan headers possess a foolproof insertion de- sign. 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 fan speed control, which requires the use of a cooler with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be in- stalled inside the chassis. CPU_FAN: Pin No. Definition 1 GND 1 2 +12V/Speed Control CPU_FAN 3 Sense 4 Speed Control 1 SYS_FAN1 SYS_FAN1: Pin No. Definition 1 GND 2 +12V /Speed Control 3 Sense 4 Reserve SYS_FAN2: Pin No. Definition 1 GND 1 SYS_FAN2 2 +12V 3 Sense 4 Speed Control SYS_FAN3/SYS_FAN4: Pin No. Definition 1 1 GND SYS_FAN3/SYS_FAN4 2 +12V 3 Sense •• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating may result in damage to the CPU or the system may hang. •• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers. Hardware Installation - 24 -

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Hardware Installation
- 24 -
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), two 4-pin (SYS_FAN1/SYS_FAN2) and two
3-pin (SYS_FAN3/SYS_FAN4) system fan headers. Most fan headers possess a foolproof insertion de-
sign. 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 fan speed control, which requires the use of a cooler
with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be in-
stalled inside the chassis.
Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Over-
•
heating may result in damage to the CPU or the system may hang.
These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers.
•
CPU_FAN:
Pin No.
Definition
1
GND
2
+12V/Speed Control
3
Sense
4
Speed Control
CPU_FAN
SYS_FAN2
1
1
SYS_FAN3/SYS_FAN4
SYS_FAN1:
SYS_FAN3/SYS_FAN4:
Pin No.
Definition
1
GND
2
+12V /Speed Control
3
Sense
4
Reserve
Pin No.
Definition
1
GND
2
+12V
3
Sense
1
SYS_FAN2:
Pin No.
Definition
1
GND
2
+12V
3
Sense
4
Speed Control
SYS_FAN1
1