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4.4 Jumpers
How Jumpers Work
To modify the operation of the motherboard, 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. Refer
to the diagram below for an example of jumping pins 1 and 2. Refer to the motherboard
layout page for jumper locations.
Note: On two-pin jumpers, "Closed" means the jumper is on and "Open" means the
jumper is off the pins.
Connector Pins
LAN Enable/Disable
JPL1 and JPL2 will enable or disable the LAN1 and LAN2 ports on the motherboard. Refer
to the table on the right for jumper settings. The default setting is Enabled.
Top View
LAN1/LAN2 Enable/Disable
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enabled (Default)
Pins 2-3
Disabled
54
Chapter 4: Motherboard Connections
Connector Pins with a Jumper
installed on Pins 1 and 2
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Troubleshooting
