Asus ROG RAMPAGE VI EXTREME Manual page 28

6. BIOS Switch button (BIOS_SWITCH)
The motherboard comes with two BIOS chips. Press the BIOS button to switch BIOS
and load different BIOS settings. The nearby BIOS_LEDs indicate the currently
selected BIOS.
7. Pause switch (PAUSE)
The pause switch allows you to freeze the cooling system at a hardware level, thus
allowing you to adjust your system settings under heavy overclocking.
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Chapter 1: Product Introduction