Specifications

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Chapter 2: Hardware information
9. CPU an d s yst em fan co nne cto rs (4- pin CP U_FAN1/2, REAR_
FAN 1/2 , F RNT _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. Insufcient air
ow inside the system may damage the motherboard components. These are
not jumpers! Do not place jumper caps on the fan connectors!
10. Ba ckp lan e S MBu s c onn ect or (6- 1 p in BPS MB1 )
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.