Asus P5M2 User Manual - Page 56

CPU and system fan connectors 4-pin CPU_FAN1/2, REAR, FAN1/2, FRNT_FAN1/2, Backplane SMBus connector

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9. CPU and system fan connectors (4-pin CPU_FAN1/2, REAR_ FAN1/2, FRNT_FAN1/2) The fan connectors support 3-pin or 4-pin 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! See "Section 2.7 Switch" to get detailed information about DIP switch setting for 4-pin or 3-pin fan cables. 10. 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. 2 - 34 Chapter 2: Hardware information

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2-±²
Chapter 2: Hardware information
9.
CPU and system fan connectors (4-pin CPU_FAN1/2, REAR_
FAN1/2, FRNT_FAN1/2)
The fan
connectors support 3-pin or 4-pin 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!
10.
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.
See “Section 2.7 Switch” to get detailed information about DIP switch setting for
4-pin or 3-pin fan cables.