1-8 Onboard Buttons, Switches, and LEDs
BIOS Switch and BIOS LED Indicators
TheBIOSswitch(BIOS_SW)allowsuserstoeasilyselectadifferentBIOSforbootuporoverclocking,helpingto
reduce BIOS failure during overclocking. The SB switch allows enabling or disabling of the Dual BIOS function.
TheLEDindicator(MBIOS_LED/BBIOS_LED)showswhichBIOSisactive.
Quick Buttons
This motherboard has 3 quick buttons: power button, reset button, and clear CMOS button. 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 the clear CMOS button to clear
theBIOScongurationandresettheCMOSvaluestofactorydefaultswhenneeded.
• Always turn off your computer and unplug the power cord from the power outlet before clearing
the CMOS values.
• Do not use the clear CMOS button when the system is on, or the system may shutdown and
data loss or damage may occur.
• Aftersystemrestart,gotoBIOSSetuptoloadfactorydefaults(selectLoadOptimizedDefaults)or
manuallyconguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOScongurations).
PW_SW: Power button
RST_SW: Reset button
CMOS_SW: Clear CMOS Button
2:BackupBIOS(BootfromthebackupBIOS)
1:MainBIOS(BootfromthemainBIOS)
BIOS Switch:
MBIOS_LED(ThemainBIOSisactive)
BBIOS_LED(ThebackupBIOSisactive)
BIOS LED Indicators:
BIOS_SW
2: Single BIOS
1: Dual BIOS
F_USB30
F_U
B_
F_ F_
_
B
BS_
B
SB_
B
_S
S_
_
B
_U
_
B
S
123
123
123
123
1
1
1
1
BSS
S
_S
SSU
1 2 3
S3
BSSS
U
1 2 3
1 2 3
1 2 3
1 2 3
__ 3
F_USB3F
F_USB30
F_U
B_
F_ F_
_
B
BS_
B
SB_
B
_S
S_
_
B
_U
_
B
S
123
123
123
123
1
1
1
1
BSS
S
_S
SSU
1 2 3
S3
BSSS
U
1 2 3
1 2 3
1 2 3
1 2 3
__ 3
F_USB3F
F_USB30
F_U
B_
F_ F_
_
B
BS_
B
SB_
B
_S
S_
_
B
_U
_
B
S
123
123
123
123
1
1
1
1
BSS
S
_S
SSU
1 2 3
S3
BSSS
U
1 2 3
1 2 3
1 2 3
1 2 3
__ 3
F_USB3F
F_USB30
F_U
B_
F_ F_
_
B
BS_
B
SB_
B
_S
S_
_
B
_U
_
B
S
123
123
123
123
1
1
1
1
BSS
S
_S
SSU
1 2 3
S3
BSSS
U
1 2 3
1 2 3
1 2 3
1 2 3
__ 3
F_USB3F
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