11 . System panel connector (20-pin PANEL)

This connector supports several chassis-mounted functions.

 

PLED

SPEAKER

 

+5 V

PLED

+5V

Ground Ground Speaker

 

HD LED+ HD LED-

ExtSMI# Ground PWRBIN Ground

Reset Ground

 

HDLED

 

RESET

A7V400-MX SE

 

 

 

 

 

PWRBTN

SMI

* Requires an ATX power supply.

A7V400-MX SE System panel connector

•System power LED (3-pin PLED)

This connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

•System warning speaker (4-pin SPEAKER)

This connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.

•Reset button (2-pin RESET)

This connector is for the chassis-mounted reset button for system reboot without turning off the system power.

•ATX power button/soft-off button (2-pin PWRBTN) This connector is for the system power button. Pressing the power button turns the system on or puts the system in sleep or soft-off mode depending on the BIOS settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF.

•System Management Interrupt (2-pin SMI)

This connector is for the chassis-mounted suspend switch that allows you to manually place the system into a suspend mode, or “green” mode. When in suspend mode, the system activity is instantly decreased to save power and to expand the life of certain system components.

•Hard disk drive activity LED (2-pin HDLED)

This connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. The IDE LED lights up or flashes when data is read from or written to the HDD.

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Chapter 1: Product introduction