Asus KFN5-D SLI - Manual (Page 49)

ASUS KFN5-D SLI 2-29
5. CPU, Front and Rear fan connectors (4-pin CPU_FAN1/2,
3-pin FRNT_FAN1/2, 3-pin REAR_FAN1/2)
The fan connectors support cooling fans of 350mA~2000mA (24
W max.) or a total of 1A~3.48A (41.76 W max.) at +12V. Connect
the fan cables to the fan connectors on the motherboard, making
sure that the black wire of each cable matches the ground pin of the
connector.
• Do not forget to connect the fan cables to the fan connectors.
Lack of sufficient air flow inside the system may damage the
motherboard components. These are not jumpers! DO NOT place
jumper caps on the fan connectors!
• All fans feature the ASUS Q-Fan technology.
6. Backplane SMBus connector (6-1 pin BPSMB1)
This connector allows you to connect SMBus (System Management
Bus) devices. Devices communicate with an SMBus host and /or other
SMBus devices using the SMBus interface.
FRNT_F
KFNS-D-SLI
R
KFN5-D SLI Fan Connectors
GND Rotation +12V
GND Rotation +12V
REAR_FAN1 REAR_FAN2
GND
Rotation
+12V
FRNT_FAN1 AN2
GN
D Rotation +12V
CPU_FAN1
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
CPU_FAN2
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
CPU_FAN1
CPU_FAN2
REAR_FAN1
REAR_FAN2
FRNT_FAN1
FRNT_FAN2
KFNS-D-SLI
R
KFN5-D SLI SMBus Connector
BPSMB1
1
I2C_CLK
#
GND
I2C_D
AT
A#
+5VSB
FAN_PW
M