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5-10 Jumper Settings
Explanation of Jumpers
To modify the operation of the mother-
board, jumpers can be used to choose
between optional settings. Jumpers
create shorts between two pins to
change the function of the connector.
Pin 1 is identified with a square solder
pad on the printed circuit board. See
the motherboard layout pages for
jumper locations.
Note: On a two-pin jumper, "Closed"
means the jumper is on both pins and
"Open" means the jumper is either on
only one pin or completely removed.
CMOS Clear
JBT1 is used to clear CMOS (which will also clear any passwords). Instead of pins,
this jumper consists of contact pads to prevent accidentally clearing the contents
of CMOS. To clear CMOS,
1. First power down the system and unplug the power cord(s).
2. With the power disconnected, short the CMOS pads with a metal object such
as a small screwdriver.
3. Remove the screwdriver (or shorting device).
4. Reconnect the power cord(s) and power on the system
Note: Do not use the PW_ON connector to clear CMOS.
LAN1/LAN2 Enable/Disable
Change the setting of jumper JPL1 to
enable or disable LAN ports on the
motherboard. See the table on the
right for jumper settings. The default
setting is enabled.
Chapter 5: Advanced Motherboard Setup
Connector
LAN1/2 Enable/Disable
Jumper Settings
Jumper Setting
Pins 1-2
Pins 2-3
5-17
3
2
Pins
Jumper
3
2
Setting
Definition
Enabled
Disabled
1
1
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