Avalue Technology HPS-621U2A Quick Reference Manual page 69

Bootup NumLock State
Quiet Boot
CSM Support
Boot mode select
Boot Option #1/#2/#3/#4/#5
On[Default]
Off
Disabled[Default]
Enabled
Disabled[Default]
Enabled
LEGACY
UEFI[Default]
Set the system boot order.
Quick Reference Guide
Select the keyboard NumLock state
Enables or disables Quiet Boot option
Enable/Disable CSM Support.
Select boot mode LEGACY/UEFI.
HPS-621U2A Quick Reference Guide 69