10. CPU and system fan connectors 
AN1/2, RE
AR_F
AN1/2, F
RNT_F
AN1/2)
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!
P5MT-S
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| GND FANPWR Rotation PWM |
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| REAR_FAN1 | Rotation |
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| REAR_FAN2 | FANPWR |
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REAR_FAN1 REAR_FAN2
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| FRNT_FAN1 | GND |
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Rotation | GND | Rotation | GND |
FANPWR | FANPWR | ||
11. Backpl
ane SMBus connector 
n 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.
P5MT-S
1BPSMB1
FANOUT I2C CLK | GND I2C DATA +5V |
ASUS |