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Intel D2550MUD2 User Manual

Intel D2550MUD2
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Overview of BIOS Features
73
3.9 BIOS Security Features
The BIOS includes security features that restrict access to the BIOS Setup program
and who can boot the computer. A supervisor password and a user password can be
set for the BIOS Setup program and for booting the computer, with the following
restrictions:
The supervisor password gives unrestricted access to view and change all the Setup
options in the BIOS Setup program. This is the supervisor mode.
The user password gives restricted access to view and change Setup options in the
BIOS Setup program. This is the user mode.
If only the supervisor password is set, pressing the <Enter> key at the password
prompt of the BIOS Setup program allows the user restricted access to Setup.
If both the supervisor and user passwords are set, users can enter either the
supervisor password or the user password to access Setup. Users have access to
Setup respective to which password is entered.
Setting the user password restricts who can boot the computer. The password
prompt will be 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, the user can enter either password to boot the computer.
For enhanced security, use different passwords for the supervisor and user
passwords.
Valid password characters are A-Z, a-z, and 0-9. Passwords may be up to
16 characters in length.
Table 37 shows the effects of setting the supervisor password and user password. This
table is for reference only and is not displayed on the screen.
Table 37. Supervisor and User Password Functions
Password
Set
Supervisor
Mode
User Mode
Setup Options
Password
to Enter
Setup
Password
During
Boot
Neither Can change all
options
(Note)
Can change all
options
(Note)
None None None
Supervisor
only
Can change all
options
Can change a
limited
number of
options
Supervisor Password Supervisor None
User only N/A Can change all
options
Enter Password
Clear User Password
User User
Supervisor
and user set
Can change all
options
Can change a
limited
number of
options
Supervisor Password
Enter Password
Supervisor or
user
Supervisor or
user
Note: If no password is set, any user can change all Setup options.

Table of Contents

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Intel D2550MUD2 Specifications

General IconGeneral
BrandIntel
ModelD2550MUD2
CategoryMotherboard
LanguageEnglish

Summary

Product Description

Overview

Provides a general overview of the Intel Desktop Board D2550MUD2.

Feature Summary

Summarizes the key features of the Intel Desktop Board D2550MUD2.

Board Layout

Illustrates the physical layout and location of major components on the motherboard.

Block Diagram

Presents a functional block diagram showing the major areas of the motherboard.

Online Support

Lists resources and web links for additional information and support for the board.

Processor

Describes the Intel Atom processor, its passive cooling, and integrated features.

Intel® D2550 Graphics Subsystem

Details the Intel GMA 3650 graphics controller features and capabilities.

System Memory

Explains the supported DDR3 SO-DIMM sockets, memory features, and configurations.

Intel® NM10 Express Chipset

Describes the Intel NM10 Express Chipset's interfaces and I/O path control.

Video Memory Allocation

Explains how system memory is dynamically allocated for video memory based on total RAM.

Analog Display (VGA)

Details the VGA port capabilities, including supported resolutions and POST enablement.

Digital Visual Interface (DVI-D)

Describes the DVI-D port, its digital-only support, and maximum resolution.

Flat Panel Interface (LVDS)

Outlines support for flat panel displays, including panel types and interface features.

Configuration Modes

Details video mode configuration options for VGA and LVDS displays via BIOS setup.

USB

Covers the board's USB 2.0 ports, including type, routing, and special support.

SATA Support

Explains the two SATA interface connectors, their transfer rate, and supported modes.

Real-Time Clock Subsystem

Describes the coin-cell battery powered real-time clock and CMOS memory.

Legacy I/O Controller

Details features of the legacy I/O controller, including serial, parallel, PS/2 ports.

LAN Subsystem

Covers the onboard Gigabit Ethernet LAN subsystem and its controller.

LAN Subsystem Drivers

Indicates where to find LAN drivers for the subsystem.

RJ-45 LAN Connector with Integrated LEDs

Describes the RJ-45 LAN connector and the function of its integrated status LEDs.

Audio Subsystem

Details the onboard Intel HD Audio subsystem, its features, and audio codec.

Audio Subsystem Software

Directs users to Intel's website for audio software and drivers.

Audio Connectors and Headers

Describes the back panel and component-side audio connectors and headers.

Hardware Management Subsystem

Covers hardware management features for compatibility with WfM specification.

Hardware Monitoring

Explains the hardware monitoring and fan control subsystem based on Winbond device.

Thermal Monitoring

Shows the locations of thermal sensors and the system fan header.

Power Management

Details the power management implementation, including ACPI and hardware support.

ACPI

Explains ACPI's role in power management and Plug and Play functions.

System States and Power States

Lists supported power states and their associated system power targets.

Wake-up Devices and Events

Details devices and events that can wake the computer from specific sleep states.

Hardware Support

Lists power management hardware features supported by the board.

Fan Header

Explains the function and operation of the system fan header.

LAN Wake Capabilities

Describes how LAN wake capabilities enable remote wake-up via network.

Instantly Available PC Technology

Explains how this technology enables the board to enter ACPI S3 sleep-state.

Wake from USB

Describes how USB bus activity wakes the computer from an ACPI S3 state.

PME# Signal Wake-up Support

Explains wake-up from ACPI states via the PME# signal.

Wake from PS/2 Devices

Details PS/2 keyboard activity wake-up for ACPI states.

WAKE# Signal Wake-up Support

Explains wake-up from ACPI states via the WAKE# signal.

Wake from Serial Port

Describes serial port activity wake-up from an ACPI S3 state.

+5 V Standby Power Indicator LED

Explains the function of the +5 V standby power indicator LED.

Technical Reference

Memory Map

Details the addressable system memory map and allocation of the 4 GB address space.

Addressable Memory

Explains how system memory is addressed and the functions that allocate address space.

Connectors and Headers

Provides an overview of the board's connectors and headers, categorized by location.

Back Panel

Details the connectors located on the back panel of the motherboard.

Back Panel Connectors

Illustrates the location and identifies the back panel connectors.

I/O Shield

Describes the I/O shield, its compatibility, and features for wireless antennas.

Component-side Connectors and Headers

Details the connectors and headers located on the component side of the motherboard.

Signal Tables for the Connectors and Headers

Provides pinout and signal name tables for various board connectors.

Add-in Card Connectors

Describes the PCI Express and Conventional PCI slots for add-in cards.

Power Supply Connector

Details the 2x12 power connector and its pin assignments.

Front Panel Header

Describes the functions and signal names of the front panel header.

Front Panel USB Headers

Provides connection diagrams for front panel USB headers.

BIOS Configuration Jumper Block

Shows the location of the jumper block and explains its role in BIOS modes.

Mechanical Considerations

Covers mechanical aspects of the board, including form factor and dimensions.

Form Factor

Describes the mini-ITX/microATX form factor and compliance with specifications.

Electrical Considerations

Discusses electrical aspects, including fan header current and add-in board considerations.

Fan Header Current Capability

Lists the current capability of the system fan header.

Add-in Board Considerations

Details considerations for add-in boards, especially regarding +5V current for PCI slots.

Thermal Considerations

Addresses thermal requirements, chassis airflow, and component temperature limits.

Passive Heatsink Design in a Passive System Environment

Provides guidelines for passive heatsink design in fanless or passively cooled systems.

Definition of Terms

Defines terms related to thermal specifications, such as TA, Tj, and TDP.

Thermal Specifications Guideline

Lists thermal requirements and specifications for board components.

Heatsink Design Guideline

Provides guidelines for heatsink design, including size and mass.

Chassis Design Guideline

Offers recommendations for chassis design to ensure proper airflow and thermal management.

Power Consumption

Details minimum and maximum power requirements for the board and attached devices.

Minimum Load Configuration

Presents test results for minimum load power consumption.

Maximum Load Configuration

Presents test results for maximum load power consumption.

Reliability

States the predicted Mean Time Between Failures (MTBF) for the board.

Environmental

Lists the environmental specifications for the board, including temperature, shock, and vibration.

Overview of BIOS Features

Introduction

Introduces the Intel BIOS, its storage, and access methods via the BIOS Setup program.

BIOS Flash Memory Organization

Describes the organization of the BIOS within the SPI Flash memory device.

Resource Configuration

Explains how the BIOS automatically configures PCI devices and system resources.

PCI* Autoconfiguration

Details the automatic configuration of PCI devices by the BIOS.

System Management BIOS (SMBIOS)

Explains SMBIOS as a DMI-compliant method for managing computer systems.

Legacy USB Support

Describes legacy USB support for using USB devices before OS drivers are available.

BIOS Updates

Explains how to update the BIOS using Intel utilities and the F7 switch.

BIOS Recovery

Details acceptable media types for BIOS recovery if an update is interrupted.

Custom Splash Screen

Explains how to augment the default Intel splash screen with a custom one.

Boot Options

Describes how to choose boot devices (hard drive, optical, network) in BIOS Setup.

Optical Drive Boot

Details booting from an optical drive, supporting El Torito specification.

Network Boot

Explains selecting network devices for booting, including onboard LAN.

Booting Without Attached Devices

Describes BIOS support for booting even when certain devices are absent.

Changing the Default Boot Device During POST

Explains how to display and change boot device priority during POST.

Adjusting Boot Speed

Discusses factors affecting system boot speed and optimization techniques.

Peripheral Selection and Configuration

Provides techniques to improve system boot speed through peripheral choices.

BIOS Boot Optimizations

Lists BIOS Setup settings to reduce POST execution time.

BIOS Security Features

Covers BIOS security features like supervisor and user passwords for access control.

Board Status and Error Messages

BIOS Beep Codes

Lists audible beep codes used by the BIOS to signal status and recoverable errors during POST.

Front-panel Power LED Blink Codes

Describes blink patterns of the front panel power LED that indicate recoverable errors.

BIOS Error Messages

Lists BIOS error messages displayed during POST and their explanations.

Port 80h POST Codes

Explains diagnostic POST codes generated during POST and their use in error determination.

Regulatory Compliance and Battery Disposal Information

Regulatory Compliance

Outlines the regulatory compliance information for the Intel Desktop Board D2550MUD2.

Safety Standards

Lists the safety standards the board complies with when installed in a compatible system.

European Union Declaration of Conformity Statement

Provides the EU Declaration of Conformity for EMC, Low Voltage, and RoHS directives.

Product Ecology Statements

Addresses worldwide product ecology concerns, including disposal and recycling.

EMC Regulations

Lists the EMC regulations the board complies with, including FCC and European standards.

ENERGY STAR* 5.0, e-Standby, and ErP Compliance

Details the board's compliance with ENERGY STAR, e-Standby, and ErP requirements.

Regulatory Compliance Marks (Board Level)

Shows the regulatory compliance marks found on the board.

Battery Disposal Information

Provides warnings and instructions regarding battery replacement and disposal.

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