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Chapter 2 Installation Instructions
NF3250K8AA/NF3250GK8AA 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
1. 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
”
.
2. The following table provides some explanations of the jumper pin settings.
Users should refer to the table while adjusting jumper settings.
Clear CMOS Jumper: CLS_CMOS
This motherboard uses the CMOS RAM to store all
the set parameters. The CMOS can be cleared by
removing the CMOS jumper. Reference the follow-
ing process.
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
1-2
Set pin 1 and pin 2 closed
2-3
Set pin 2 and pin 3 closed
Closed
Set the pin closed
Open
Set the pin opened
1
1
1
1
1
1
Warning:
1. Disconnect the power cable before adjusting the jumper
settings.
2. DO NOT clear the CMOS while the system is turned on.
CLS_CMOS
Normal
(default)
Clear
1
2
3
1
2
3
