Asus K8N-LR User Manual - Page 43

pin CPU_FAN1/2, FRONT_FAN1/2, Rear_FAN1/2

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4. CPU, Front and Rear fan connectors (3-pin CPU_FAN1/2, FRONT_FAN1/2, 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 fan features the ASUS Smart Fan technology. R K8N-LR CPU_FAN2 CPU_FAN1 FRNT_FAN2 FRNT_FAN1 CPU_FAN2 CPU_FAN1 Rotation +12V GND GND +12V Rotation FRNT_FAN2 Rotation +12V GND Rot+a1ti2oVn GND FRNT_FAN1 REAR_FAN1 REAR_FAN2 K8N-LR Fan Connectors REAR_FAN1 GND +12V Rotation REAR_FAN2 Rotation +12V GND 5. 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. R K8N-LR BPSMB1 1 FAN_PWM I2C_CLK# GND I2C_DATA# +5VSB K8N-LR SMBus Connector ASUS K8N-LR 2-23

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ASUS K8N-LR
2-23
4.
CPU, Front and Rear fan connectors
(3-pin CPU_FAN1/2, FRONT_FAN1/2, 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 fan features the ASUS Smart Fan technology.
5.
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.
K8N-LR
CPU_FAN2
CPU_FAN2
CPU_FAN1
FRNT_FAN2
REAR_FAN1
REAR_FAN2
K8N-LR Fan Connectors
FRNT_FAN1
GND
Rotation
+12V
CPU_FAN1
GND
Rotation
+12V
FRNT_FAN2
GND
Rotation
+12V
GND
Rotation
+12V
FRNT_FAN1
REAR_FAN1
GND
Rotation
+12V
GND
Rotation
+12V
REAR_FAN2
K8N-LR
K8N-LR SMBus Connector
BPSMB1
1
I2C_CLK#
GND
I2C_DATA#
+5VSB
FAN_PWM