NEC Express5800 Series EXP320B - Manual (Page 106)

4-8 System Configuration
Saving the Configuration Data
To save the BIOS configuration data
Select [Exit] - [Exit Saving Changes]
To discard changes to the BIOS configuration data
Select [Exit] - [Exit Discarding Changes]
To restore the default BIOS configuration data (the data may differ from the factory-setting)
Select [Exit] - [Load Setup Defaults].