3.HARDWARE SETUP

14.ATX Power Supply Connector (20-pin ATXPWR)

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

 

+3.3

Volts

+3.3 Volts

 

-12.0 Volts

+3.3 Volts

 

Ground

Ground

 

Power Supply On

+5.0 Volts

 

Ground

Ground

 

Ground

+5.0 Volts

 

Ground

Ground

 

-5.0

Volts

Power Goo

 

+5.0

Volts

+5V Standb

P3V133

+5.0

Volts

+12.0 Volts

P3V133 ATX Power Connector

IMPORTANT: Make sure that your ATX power supply can supply at least 10mA on the 5-volt standby lead (5VSB). You may experience difficulty in powering on your system if your power supply cannot support the load. For Wake-On- LAN support, your ATX power supply must supply at least 720mA +5VSB.

15.Chassis Intrusion Alarm Lead (optional) (4-1 pin CHASIS)

This requires an external detection mechanism such as a chassis intrusion moni- tor/sensor or microswitch. The sensor is triggered when a high level signal is sent to the Chassis Signal lead, which occurs when a panel switch or light detec- tor is triggered. This function requires the optional CIDB chassis sensor module to be installed (See 7. APPENDIX).

NOTE: When the chassis is opened, connect/short the Chassis Signal pin to the +5VSB pin. When the chassis is closed, connect/short the Chassis Signal pin to the Ground pin.

Ground Chassis Signal

+5Volt (Power Supply Stand By)

P3V133

CHASSIS

P3V133 Chassis Open Alarm Lead

.3 SETUPH/W

Connectors

ASUS P3V133 User’s Manual

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