.3 H/WConnectors SETUP

3.HARDWARE SETUP

14)Power Supply Connectors (20 pin block ATXPWR)

This connector connects to an ATX 12V power supply. The plug from the power supply fits in only one orientation because of the different hole sizes. Find the proper orientation and push down firmly making sure that the pins are aligned.

IMPORTANT: Make sure that the ATX 12V power supply (minimum

recommended wattage: 230W) can supply 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.

+12.0Volts

+5.0 Volts

+5V Standby

+5.0 Volts

Power Good

-5.0 Volts

Ground

Ground

+5.0 Volts

Ground

Ground

Ground

+5.0 Volts

Power Supply On

Ground

Ground

+3.3 Volts

-12.0Volts

A7V266-C

 

+3.3 Volts

+3.3Volts

A7V266-C ATX Power Connector

15)SMBus Connector (5-1 pin SMB)

This connector allows you to connect 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 specific implementation of an I2C bus, a multi-device bus that allows multiple chips to connect to the same bus and enabling each one to act as a master by initiating data transfer.

A7V266-C

A7V266-C SMBus Connector

SMB_COM

1

SMBCLK

Ground SMBDATA +3V

36

ASUS A7V266-C User’s Manual