1-7 Onboard Buttons, Switches and LEDs
BIOS Switches and BIOS LED Indicators
TheBIOSswitch(BIOS_SW)allowsuserstoeasilyselectadifferentBIOSforbootuporoverclocking,helping
toreduceBIOSfailureduringoverclocking.TheDualBIOS™(SB)switchallowsforenablingordisablingofthe
DualBIOS™function.TheLEDindicator(MBIOS_LED/BBIOS_LED)showswhichBIOSisactive.
2:BackupBIOS(BootfromthebackupBIOS)
1:MainBIOS(BootfromthemainBIOS)
BIOS_SW
2: Single BIOS
1: Dual BIOS
SB
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
__ 3
F_USB3F
S _
S _
S _
SF
B_
B_
F
_0
S
S
_0F
_F
_
_
__B
U
S _S
_
USB0_B
B_
F_USB3
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
__ 3
F_USB3F
S _
S _
S _
SF
B_
B_
F
_0
S
S
_0F
_F
_
_
__B
U
S _S
_
USB0_B
B_
F_USB3
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
__ 3
F_USB3F
S _
S _
S _
SF
B_
B_
F
_0
S
S
_0F
_F
_
_
__B
U
S _S
_
USB0_B
B_
F_USB3
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
__ 3
F_USB3F
S _
S _
S _
SF
B_
B_
F
_0
S
S
_0F
_F
_
_
__B
U
S _S
_
USB0_B
B_
F_USB3
2 1
MBIOS_LED(ThemainBIOSisactive)
BBIOS_LED(ThebackupBIOSisactive)
BIOS LED Indicators:
CPU/VGA/DRAM/BOOT (Status LEDs)
The status LEDs show whether the CPU, graphics card, memory, and operating system are working properly
aftersystempower-on.IftheCPU/VGA/DRAMLEDison,thatmeansthecorrespondingdeviceisnotworking
normally; if the BOOT LED is on, that means you haven't entered the operating system yet.
CPU: CPU status LED
VGA: Graphics card status LED
DRAM: Memory status LED
BOOT: Operating system status LED
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
__ 3
F_USB3F
S _
S _
S _
SF
B_
B_
F
_0
S
S
_0F
_F
_
_
__B
U
S _S
_
USB0_B
B_
F_USB3
CPU DRAM
VGA BOOT
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 this button to clear the BIOS
congurationandresettheCMOSvaluestofactorydefaultswhenneeded.
PW_SW: Power Button
RST_SW: ResetButton
CMOS_SW: Clear CMOS Button
• Always turn off your computer and unplug the power cord from the power outlet before clearing
the CMOS values.
• NOTE: 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).
OC Button
The OC button helps enthusiasts and overclockers not only get the most performance from their hardware, but
also the absolute most enjoyable OC experience.
OC Button:
PressthisbuttontoloadthemostoptimizedGIGABYTEoverclocking
congurationforyourhardware.
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