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System Bus Speed
JP39 allows you to select Auto, 400
or 533 MHz for your system (front
side) bus speed. The recommended
Auto setting will automatically deter-
mine the system bus speed of your
processor(s).
right for jumper settings.
5-10 Onboard Indicators
LAN (Ethernet) LEDs
The Gb and the Mb LAN (Ethernet)
ports both have two LEDs, which
are used to give connectivity sta-
tus as shown below.
(left) LED flashes to indicate activ-
ity while the other (right) LED may
flash green or orange to indicate
the speed of the connection (there
is no orange indication on the Mb
port).
See the tables below for
the functions associated with
these LEDs.
See the table on the
The yellow
Chapter 5: Advanced Motherboard Setup
System Bus Speed
Jumper Settings (JP39)
Jumper
Position
Pins 1-2
Pins 2-3
Open
"Auto" is the recommended setting.
LAN LED Indicator (Left)
LED
Color
Off
Yellow
LAN LED Indicator (Right)
LED
Color
Off
Green
Orange
5-21
Definition
Auto
400 MHz
533 MHz
Definition
Not Active
Active
Definition
No Connection
100 MHz
1 GHz
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