Acer Altos G540 M2 - Manual (Page 133)

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Security menu
The Security menu allows you to safeguard and protect the system
from unauthorized use by setting up access passwords.
There are three types of passwords that you can set:
• Supervisor password
Entering this password will allow the user to access and change all
settings in the Setup Utility.
• User password
Entering this password will restrict a user’s access to the Setup
menus. To enable or disable this field, a supervisor password must
first be set. A user can only access and modify the System Time,
System Date, and Set User Password fields.
• Power-on password
When the Password on Boot field is enabled, a password will be
required to boot up the server. To enable or disable this field, a
supervisor password must first be set.