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.

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.

A7N266-VM

ATXPWR

+3.3VDC +3.3VDC

-12.0VDC +3.3VDC

COM COM

PS_ON# +5.0VDC

COM COM

COM +5.0VDC

COM COM

-5.0VDC PWR_OK

+5.0VDC +5VSB

+5.0VDC +12.0VDC

A7N266-VM ATX Power Connector

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 SMBus Connector

SMB

1

 

FLOATING SMBCLK

Ground SMBDATA +3V

ASUS A7N266-VM motherboard user guide

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