Aaeon PCM-5890 Manual page 65

If you select this option and press <Enter>, the values entered in
the setup utilities will be recorded in the chipset's CMOS
memory. The microprocessor will check this every time you turn
your system on and compare this to what it finds as it checks the
system. This record is required for the system to operate.
Selecting this option and pressing <Enter> lets you exit the Setup
program without recording any new values or changing old ones.
56 PCM-5890 User's Manual
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