Dell Vostro 3900 Mini Tower (Late 2013) - Manual (Page 33)

Power
Wake up by Integrated LAN/WLAN Enable or disable Wake up by Integrated LAN/
WLAN
AC Recovery Specifies the AC recovery mode.
Auto Power On Enable or disable Auto Power On mode.
Security
Supervisor Password Specifies whether an administrator password has
been assigned.
User Password Specifies whether a user password has been
assigned.
Set Supervisor Password Allows you to change or delete the administrator
password.
HDD Protection Enable or disable HDD protection.
Exit
This section allows you to save, discard, and load default settings before exiting from System Setup.
33