10.CPU and system fan connectors
The fan connectors support cooling fans of 350 mA ~ 740 mA (8.88 W max.) or a total of 2.1 A ~ 4.44 A (53.28 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. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors!
| CPU_FAN1 |
| CPU_FAN2 |
| REAR_FAN1 |
| REAR_FAN2 |
LAN2 | FRNT_FAN1 |
| FRNT_FAN2 |
CPU_FAN1
PWM
ROTATION
FANPWR
GND
REAR_FAN1
Rotation
FANPWR 
GND
FRNT_FAN1
CPU_FAN2
PWM
ROTATION
FANPWR
GND 
REAR_FAN2
Rotation
FANPWR 
GND
FRNT_FAN2
P5MT Series Fan connectors |
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| FANPWR | GND | ||
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| Rotation | ||||
Rotation FANPWR GND
11.Backplane SMBus connector
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.
LAN2 | 1 BPSMB1 |
| FANOUT I2C CLK GND I2C DATA +5V |
P5MT Series SMBus connector
ASUS |