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S
_
3) PMBUS (Power Information Detection Header)
The header allows for detection of the power information which can be displayed via the system software.
S
_
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.
S
_
CPU_FAN/SYS_FAN1
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
U
B_
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.
SYS_FAN3_PUMP
S F
B_
S
_S
1
5
1
1
SYS_FAN2
1
1
SYS_FAN4_PUMP
• 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.
_
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Pin No. Definition
1
PMBUS_CLOCK
2
PMBUS_DATA
3
PMBUS_ALERT
4
GND
5
3.3V
_
Pin No. Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
B_
USB 0_ B
Pin No. Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
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F_USB3 F
_
_B
_
S F_
B
F_USB3
F_USB30 3
S _
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