12.Power supply SMBus connector (5-pin PSUSMB1)

This connector is for the power supply SMB cable, if your power supply supports the SMBus function.

PSUSMB1

I2C_7_CLK# I2C_7_DATA# NC GND +3.3V Remote Sense

DSEB-D16 Series Power supply SMBus connector

13. SSI power connectors (24-pin ATXPWR1, 8-pin ATX12V1, 4-pin ATX12V2)

These connectors are for SSI power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

• For a fully configured system, we recommend that you use an SSI

12 V-compliant power supply unit (PSU) for LGA771‑socket Intel® Xeon Dual Core processors (Bensley platform).

• DO NOT forget to connect the 24+8+4-pin power plugs; otherwise, the system will not boot up.

• Use of a PSU with a higher power output is recommended when configuring a system with more power consuming devices. The system may become unstable or may not boot up if the power is inadequate.

• You must install a PSU with a higher power rating if you intend to install additional devices.

ATXPWR1

24-pin Power Connector

+3 Volts

+3 Volts Ground +5 Volts Ground +5 Volts Ground Power OK

+5V Standby

+12 Volts

+12 Volts +3 Volts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3 Volts

-12 Volts Ground PSON# Ground Ground Ground -5 Volts

+5 Volts

+5 Volts

+5 Volts Ground

ATX12V1

8-pin

12V1 GND 12V1 GND 12V2 GND 12V2 GND

+12V DC GND

ATX12V2

DSEB-D16 Series ATX power connectors

4-pin

+12V DC GND

2-44

Chapter 2: Hardware information