12.Hard disk connector (2-pin HDDLED)

This 2-pin connector connects to the front panel HD LED and lights up on every read/write activity of any of the disk drives connected to the primary or secondary IDE slots.

HDDLED

P4BGL-MX

TIP: If the case-mounted LED does not

P4BGL-MX HDD Activity LED light, try reversing the 2-pin plug.

13.System panel connector (20-pin PANEL1)

This connector accommodates several system front panel functions.

P4BGL-MX

P4BGL-MX System Panel Connectors

Keyboard Lock

Speaker

Power LED

Connector

 

Ground Ground Speaker

+5 V

PLED Keylock Ground

+5V

 

ExtSMI# Ground PWR Ground

Reset Ground

 

 

 

Reset SW

SMI Lead

 

ATX Power

 

Switch*

*Requires an ATX power supply.

• 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.

1-18

Chapter 1: Motherboard Information