Chapter 2
24
J
UMPERS
The mainboard provides jumpers for setting some mainboard functions. This
section will explain how to change the settings of the mainboard functions
using the jumpers.
Clear CMOS: CLEAR_CMOS1
The onboard CMOS RAM stores system configuration data and has an
onboard battery power supply. To reset the CMOS settings, set the jumper
on pins 2 and 3 while the system is off. Return the jumper to pins 1 and 2
afterwards. Setting the jumper while the system is on will damage the
mainboard.
Setting 1
2
3
Clear CMOS setting
OFF
ON
ON
Keep CMOS setting
ON
ON
OFF
WARNING:
Except when clearing the RTC RAM, never remove the
cap on CLEAR_CMOS1 jumper default position. Removing the cap
will cause system boot failure.
Avoid clearing the CMOS while the
system is on; it will damage the mainboard.
CPU Front Side Bus Speed Select: FS1
This jumper is for selecting CPU Front Side Bus Speed
between 533MHz and 400MHz. Setting: shorting pins 1 &
2 will select 533MHz, while shorting pins 2 & 3 will select
400MHz.
Setting 1
2
3
400MHz OFF
ON
ON
533MHz ON
ON
OFF
Clear:
1
3
2
Keep:
1
3
2
400MHz:
1
3
2
533MHz:
1
3
2
FS1
Summary of Contents for EPIA-PN
Page 1: ...User s Manual EPIA PN Version 1 0 June 21 2006...
Page 8: ...iv This page is left intentionally blank...
Page 12: ...Chapter 1 4 MAINBOARD LAYOUT...
Page 13: ...Specifications 5 BACK PANEL LAYOUT...
Page 35: ...27 CHAPTER 3 BIOS Setup This chapter gives a detailed explanation of the BIOS setup functions...
