1-8 Onboard Buttons, Switches, and LEDs
BIOS Switches and BIOS LEDs
The DualBIOS switch (SB) allows enabling or disabling of the Dual BIOS function.
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 LED indicator (MBIOS_LED/BBIOS_LED) shows which BIOS is active.
DualBIOS Switch:
MBIOS_LED (The main BIOS is active)
BBIOS_LED (The backup BIOS is active)
BIOS LED Indicators:
2: Single BIOS
1: Dual BIOS
SB
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 conguration
and reset the CMOS values to factory defaults when needed.
PW_SW: Power Button
RST_SW:
Reset Button
CMOS_SW:
Clear CMOS Button
• Always turn off your computer and unplug the power cord from the power outlet before using
the clear CMOS button.
• Do not use the clear CMOS 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 congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS congurations).
CMOS_SW
RST_SW
PW_SW
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 4 5
S3
BSSS
U
__ 3
F_USB3F
S _
S _
SF
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 4 5
S3
BSSS
U
__ 3
F_USB3F
S _
S _
SF
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 4 5
S3
BSSS
U
__ 3
F_USB3F
S _
S _
SF
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 4 5
S3
BSSS
U
__ 3
F_USB3F
S _
S _
SF
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