Smart Switches - ASROCK X99E-ITX/ac Manual Del Usuario

2.7 Smart Switches

The motherboard has a Clear CMOS Switch, allowing users to clear the CMOS
values.
Clear CMOS Switch
(CLRCBTN)
(see p.8, No. 14)
This function is workable only when you power off your computer and unplug the power
supply.
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Clear CMOS Switch
allows users to quickly
clear the CMOS values.