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Chapter 1: Motherboard Information
13. System panel connector (20-pin PANEL1)
This connector accommodates several system front panel functions.
• 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.
P4BGL-MX
P4BGL-MX 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*
P4BGL-MX
P4BGL-MX HDD Activity LED
TIP: If the case-mounted LED does no
t
light, try reversing the 2-pin plug.
HDDLED
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.