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Asus P4B266 User Manual

Page 56

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2-34

Chapter 2: Hardware information

16. System panel connector (20-pin PANEL)

This connector accommodates several system front panel functions.

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.

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.

System Message LED Lead (2-pin MLED)

This 2-pin connector is for the system message LED that indicates
receipt of messages from a fax/modem. The normal status for this LED
is ON, when there is no incoming data signal. The LED blinks when
data is received. The system message LED feature requires an ACPI
OS and driver support.

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.

P4B266

®

P4B266 System Panel Connectors

*

Requires an ATX power supply.

PLED

Ground

MLED

PWR

+5 V

Keylock

+5V

Speaker

Speaker
Connector

Power LED

Ground

+5 V

Reset SW

SMI Lead

Message LED

ExtSMI#

Ground

Reset

Ground

Ground

Ground

Keyboard Lock

ATX Power
Switch*

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