Onboard Buttons, Switches And Leds - Gigabyte AORUS MASTER Z490 User Manual

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Onboard Buttons, Switches and LEDs

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BIOS Switches 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.
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The LED indicator (MBIOS_LED/BBIOS_LED) shows which BIOS is active.
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BIOS_SW SB
Before setting the SB switch, be sure to turn off your computer and power supply.
Status LEDs
The status LEDs show whether the CPU, memory, graphics card, and operating system are working properly
after system power-on. If the CPU/DRAM/VGA LED is on, that means the corresponding device is not working
normally; if the BOOT LED is on, that means you haven't entered the operating system yet.
BIOS_SW
1: Main BIOS (Boot from the main BIOS)
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2: Backup BIOS (Boot from the backup BIOS)
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SB
1: Dual BIOS
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2: Single BIOS
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BBIOS_LED
BIOS LED Indicators:
MBIOS_LED
MBIOS_LED (The main BIOS is active)
BBIOS_LED (The backup BIOS is active)
CPU: CPU status LED
DRAM: Memory status LED
VGA: Graphics card status LED
BOOT: Operating system status LED
CPU DRAM
VGA BOOT
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Hardware Installation