Intel D2550DC2 Product guide for Intel Desktop Board D2550DC2 - Page 19

Security Passwords, Hardware Management Features

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Desktop Board Features Security Passwords The BIOS includes security features that restrict whether the BIOS Setup program can be accessed and who can boot the computer. A supervisor password and a user password can be set for the BIOS Setup and for booting the computer, with the following restrictions: • The supervisor password gives unrestricted access to view and change all Setup options. If only the supervisor password is set, pressing at the password prompt of Setup gives the user restricted access to Setup. • If both the supervisor and user passwords are set, you must enter either the supervisor password or the user password to access Setup. Setup options are then available for viewing and changing depending on whether the supervisor or user password was entered. • Setting a user password restricts who can boot the computer. The password prompt is displayed before the computer is booted. If only the supervisor password is set, the computer boots without asking for a password. If both passwords are set, you can enter either password to boot the computer. For instructions on resetting the password, see Clearing Passwords on page 40. Hardware Management Features The board's hardware management features enable the board to be compatible with the Wired for Management (WfM) specification. The board's hardware management features include thermal and voltage monitoring. The hardware monitoring and fan control subsystem is based on the Winbond W83627DH-P legacy I/O controller, which supports the following: • Processor and system ambient temperature monitoring • System fan speed monitoring • Power monitoring of +12 V, +5 V, +5 Vstdby, +3.3 V, and +VCCP • SMBus interface Power Management Features Power management is implemented at several levels, including: • Software support through the Advanced Configuration and Power Interface (ACPI) • Hardware support: ― Power connector ― Fan header ― +5 V standby power indicator LED ― LAN Wake capabilities ― Instantly Available PC technology ― Wake from USB ― PME# wakeup support ― WAKE# signal wakeup support 19

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Desktop Board Features
19
Security Passwords
The BIOS includes security features that restrict whether the BIOS Setup program can
be accessed and who can boot the computer.
A supervisor password and a user
password can be set for the BIOS Setup and for booting the computer, with the
following restrictions:
•
The supervisor password gives unrestricted access to view and change all Setup
options.
If only the supervisor password is set, pressing <Enter> at the password
prompt of Setup gives the user restricted access to Setup.
•
If both the supervisor and user passwords are set, you must enter either the
supervisor password or the user password to access Setup.
Setup options are then
available for viewing and changing depending on whether the supervisor or user
password was entered.
•
Setting a user password restricts who can boot the computer.
The password
prompt is displayed before the computer is booted.
If only the supervisor
password is set, the computer boots without asking for a password.
If both
passwords are set, you can enter either password to boot the computer.
For instructions on resetting the password, see Clearing Passwords on page 40.
Hardware Management Features
The board’s hardware management features enable the board to be compatible with
the Wired for Management (WfM) specification.
The board’s hardware management
features include thermal and voltage monitoring.
The hardware monitoring and fan control subsystem is based on the Winbond
W83627DH-P legacy I/O controller, which supports the following:
•
Processor and system ambient temperature monitoring
•
System fan speed monitoring
•
Power monitoring of +12 V, +5 V, +5 Vstdby, +3.3 V, and +VCCP
•
SMBus interface
Power Management Features
Power management is implemented at several levels, including:
•
Software support through the Advanced Configuration and Power Interface (ACPI)
•
Hardware support:
―
Power connector
―
Fan header
―
+5 V standby power indicator LED
―
LAN Wake capabilities
―
Instantly Available PC technology
―
Wake from USB
―
PME# wakeup support
―
WAKE# signal wakeup support