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ASUS A7N266-VM motherboard user guide
29
14) Power Supply Connectors (20 pin block ATXPWR)
This connector supports an ATX 12V power supply. The plug from the power
supply fits in only one orientation. Push down firmly ensuring that the pins
are aligned.
15) SMBus Connector (6-1 pin SMB)
This connector supports SMBus (System Management Bus) devices. SMBus
devices communicate by means of the SMBus with an SMBus host and/or
other SMBus devices. SMBus is a multi-device bus that permits multiple
chips to connect to the same bus and enable each one to act as a master by
initiating data transfer.
A7N266-VM
®
A7N266-VM ATX Power Connector
+3.3VDC
-12.0VDC
COM
PS_ON#
COM
COM
COM
-5.0VDC
+5.0VDC
+5.0VDC
PWR_OK
+12.0VDC
+3.3VDC
+3.3VDC
COM
+5.0VDC
COM
+5.0VDC
COM
+5VSB
ATXPWR
A7N266-VM
®
A7N266-VM SMBus Connector
SMB
1
SMBCLK
Ground
SMBDATA
+3V
FLOATING
IMPORTANT! Make sure that the ATX 12V power supply offers at least
10mA on the +5-volt standby lead (+5VSB). The system may become
unstable and may experience difficulty powering up if the power supply
is inadequate. For Wake-On-LAN support, the ATX power supply must
supply at least 720mA +5VSB.