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22 chapter 1: product introduction, System power led lead (2-pin pled), Keyboard lock lead (2-pin keylock) – Asus P4BP-MX User Manual

Page 32: System warning speaker lead (4-pin speaker), Reset switch (2-pin reset), System management interrupt lead (2-pin extsmi#)

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Chapter 1: Product introduction

13. System panel connector (20-1 pin PANEL)

This connector accommodates several system front panel functions.

P4BP-MX

P4BP-MX System Panel Connectors

*

Requires an ATX power supply.

PLED

Ground

PWR

+5 V

Keylock

+5V

Speaker

Speaker
Connector

Power LED

Ground

Reset SW

SMI Lead

ExtSMI#

Ground

Reset

Ground

Ground

Ground

Keyboard Lock

ATX Power
Switch*

System Power LED Lead (2-pin PLED)

This 2-pin connector connects to the system power LED. The LED lights up
when you turn on the system power.

Keyboard Lock Lead (2-pin KEYLOCK)

This 2-pin connector connects to a chassis-mounted switch to allow the use of
the keyboard lock feature.

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.

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 PWRBTN)

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 4 seconds turns the system OFF.

System Management Interrupt Lead (2-pin ExtSMI#)

This 2-pin connector permits switching to suspend mode, or “Green” mode, in
which system activity is instantly decreased to save power and to expand the
life of certain system components.