12.System panel connector (20-pin PANEL)

This connector accommodates several system front panel functions.

A7V400-MX

A7V400-MX System Panel Connectors

 

 

Speaker

Power LED

Connector

 

Ground Ground Speaker

+5 V

PLED

+5V

HD LED+ HD LED-

ExtSMI# Ground

PWRBIN Ground

Reset Ground

IDELED

 

Reset SW

ATX Power

SMI Lead

Switch*

*Requires an ATX power supply.

•System Power LED Lead (3-1 pin PLED)

This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

•System Warning Speaker Lead (4-pin SPEAKER)

This 4-pin connector connects to the case-mounted speaker and allows you to hear system beeps and warnings.

•System Management Interrupt Lead (2-pin SMI)

This 2-pin connector allows you to manually place the system into a suspend mode, or “green” mode, where system activity is instantly decreased to save power and to expand the life of certain system components. Attach the case-mounted suspend switch to this 2-pin connector.

•Reset Switch (2-pin RESET)

This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the power switch.

•ATX Power Switch/Soft-Off Switch Lead (2-pin PWR)

This connector connects a switch that controls the system power. Pressing the power switch turns the system between ON and SLEEP, or ON and SOFT OFF, depending on the BIOS or OS settings. Pressing the power switch while in the ON mode for more than four seconds turns the system OFF.

•Hard Disk Activity Lead (2-pin IDE LED)

This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up.

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Chapter 1: Product introduction