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Chapter 2 Installation Instructions
NF4K8AB Series User Manual
Jumpers
Users can change the jumper settings on this motherboard if necessary. This
section explains how to use the various functions of this motherboard by chang-
ing the jumper settings. Users should read the following contents carefully prior
to modifying any jumper settings.
Description of Jumpers
For the jumpers on this motherboard, pin 1 can be identified by the silk-
screen printed
next to it. However, in this manual, pin 1 is simply
labeled as “1”.
The following table provides some explanations of the jumper pin settings.
Users should refer to the table while adjusting jumper settings.
Clear CMOS Jumper: J2H1
This motherboard uses the CMOS RAM to store all
the set parameters. The CMOS can be cleared by
removing the CMOS jumper.
1. Turn off the AC power supply and short pins 1 and
2 on the jumper.
2. Return the jumper to the normal setting (locking
pins 2 and 3 together with the jumper cap).
3. Turn on the system. The BIOS is returned to the
default settings.
Jumper
Diagram
Definition
Description
Set pin 1 and pin 2 closed
Set pin 2 and pin 3 closed
Closed
Set the pin closed
Open
Set the pin opened
Warning:
1. Disconnect the power cable before adjusting the jumper
settings.
2. DO NOT clear the CMOS while the system is turned on.
Clear CMOS Jumper
Normal
(default)
Clear
