User`s manual

- 24 -
Hardware Installation
1-8 Onboard Buttons, Switches, and LEDs
BIOS Switch and BIOS LED Indicators
TheBIOSswitch(BIOS_SW)allowsuserstoeasilyselectadifferentBIOSforbootuporoverclocking,helpingto
reduce BIOS failure during overclocking. The SB switch allows enabling or disabling of the Dual BIOS function.
TheLEDindicator(MBIOS_LED/BBIOS_LED)showswhichBIOSisactive.
BIOS Switch:
MBIOS_LED(ThemainBIOSisactive)
BBIOS_LED(ThebackupBIOSisactive)
BIOS LED Indicators:
2:BackupBIOS(BootfromthebackupBIOS)
1:MainBIOS(BootfromthemainBIOS)
BIOS_SW
2: Single BIOS
1: Dual BIOS
SB
BIOS_SW
SB
MBIOS_LED
BBIOS_LED
Quick Buttons
This motherboard has four quick buttons: Power, Reset, Clear CMOS, and Clear Battery. The power button and
reset button allow users to quickly turn on/off or reset the computer in an open-case environment when they want
tochangehardwarecomponentsorconducthardwaretesting.UsethisbuttontocleartheBIOSconguration
and reset the CMOS values to factory defaults when needed. The Clear Battery button has the same function
as removing the battery from the motherboard.
PW_SW: Power button
RST_SW: Reset button
CMOS_SW: Clear CMOS Button
CBAT_SW: Clear Battery Button
• Always turn off your computer and unplug the power cord from the power outlet before using
the clear CMOS button.
• Always turn off the power of the power supply before using the clear battery button. After pressing
thisbutton,makesuretowaitforveminutesbeforeyouturnonthecomputer.
• Do not use the clear CMOS or clear battery button when the system is on, or the system may
shutdown and data loss or damage may occur.
• Aftersystemrestart,gotoBIOSSetuptoloadfactorydefaults(selectLoadOptimizedDefaults)or
manuallyconguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOScongurations).
CBAT_SW
CMOS_SW
PW_SW
RST_SW
1
2
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3
BSSS
U
 
1 2 3
4
 
1 2 3 4
 
1 2 3
4
 
1 2 3 4
 __ 3
F_USB3F
1
2
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3
BSSS
U
 
1 2 3
4
 
1 2 3 4
 
1 2 3
4
 
1 2 3 4
 __ 3
F_USB3F
1
2
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3
BSSS
U
 
1 2 3
4
 
1 2 3 4
 
1 2 3
4
 
1 2 3 4
 __ 3
F_USB3F
1
2
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3
BSSS
U
 
1 2 3
4
 
1 2 3 4
 
1 2 3
4
 
1 2 3 4
 __ 3
F_USB3F