Gigabyte C246-WU4 - Page 15

4/5)CPU_FAN/SYS_FAN1/2(FanHeaders)
All fan headers on this motherboard are 4-pin. 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 speed control function requires the use of a fan with fan speed control design. For
optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.
• 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congurationjumperblocks.Donotplaceajumpercapontheheaders.
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
3) PMBUS(PowerInformationDetectionHeader)
The header allows for detection of the power information which can be displayed via the system software.
Pin No. Denition
1 PMBUS_CLOCK
2 PMBUS_DATA
3 PMBUS_ALERT
4 GND
5 3.3V
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3
BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_
SF_
B 
USB0_B
B_
F_USB3

F_USB303

_

_3U
S_
51
CPU_FAN/SYS_FAN1
DEBUG
PORT
G.QBOFM
1
SYS_FAN2
DEBUG
PORT
G.QBOFM
1
6) SYS_FAN3_PUMP/SYS_FAN4_PUMP(SystemFan/WaterCoolingPumpHeaders)
The fan/pump headers are 4-pin and possess a foolproof insertion design. 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 speed control function requires the use of a fan with
fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed
inside the chassis. The header also provides speed control for a water cooling pump, refer to Chapter 2,
"BIOSSetup,""M.I.T.,"formoreinformation.
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
DEBUG
PORT
G.QBOFM
1
DEBUG PORT
G.QBOFM
1
SYS_FAN4_PUMP
SYS_FAN3_PUMP
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