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P4t533-c smbus connector smb – Asus P4T533-C User Manual

Page 49

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ASUS P4T533-C motherboard user guide

35

12. ATX power connectors (20-pin ATXPWR, 4-pin 12V EZ_PLUG, 4-

pin AUX12V)

These connectors connect to an ATX 12V power supply. The plugs from
the power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit. In addition to the 20-pin ATXPWR connector,
this motherboard requires that you connect the 4-pin ATX +12V power
plug to provide sufficient power to the CPU.

Make sure that your ATX 12V power supply can provide at least 8A on
the +12V lead and at least 1A on the +5-volt standby lead (+5VSB).
The minimum recommended wattage is 230W, or 300W for a fully
configured system. The system may become unstable and may
experience difficulty powering up if the power supply is inadequate.

P4T533-C

®

P4T533-C ATX & Auxiliary Power Connectors

ATXPWR

ATX12V

EZ_PLUG

+3.3VDC

-12.0VDC

GND

PS_ON#

GND

GND

GND

-5.0VDC

+5.0VDC

+5.0VDC

PWR_OK

+12.0VDC

+3.3VDC

+3.3VDC

GND

+5.0VDC

GND

+5.0VDC

GND

+5VSB

+12V

GND

NC

GND

+12V DC

GND

+12V DC

GND

P4T533-C

®

P4T533-C SMBus Connector

SMB

1

SMBCLK

Ground

SMBDA

T

A

+3V

FLOA

TING

13. 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.