Dell OptiPlex GX280 User Manual

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Dell™ OptiPlex™ GX280 Systems User's Guide

Small Form-Factor Computer

Small Desktop Computer

Desktop Computer

Small Mini-Tower Computer

Mini-Tower Computer

Dell™ OptiPlex™ GX280 Systems User's Guide

Small Form-Factor

Computer

Documentation for Your Computer

Finding Information Specifications

Cleaning Your Computer

Advanced Features

LegacySelect Technology Control Manageability

Security

Password Protection System Setup

Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading

Power Management

About Your Computer	Adding and Removing Parts
Front View	Before You Begin
Back View	Opening the Computer Cover
Inside Your Computer	Battery
System Board Components	Chassis Intrusion Switch
Attaching and Removing the Computer Stand	Drives
	I/O Panel
	Memory
	PCI and PCI Express Cards and Serial Port Adapters
	Power Supply
	Processor
	System Board
	Closing the Computer Cover
Computer and Software Problems Additional Information
Troubleshooting Tools and Utilities	Microsoft® Windows® XP Features
Solving Problems	Glossary
Reinstalling Drivers and the Operating System	Warranty
Getting Help	FCC Notices (U.S. Only)

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the "Glossary."

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

The Drivers and Utilities CD (ResourceCD), operating system media, and Quick Reference Guides are optional, and as such may not ship with all computers.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, OptiPlex, Inspiron, Dimension, Latitude, Dell Precision, DellNet, TravelLite, Dell OpenManage, PowerVault, Axim, PowerEdge, PowerConnect, and PowerApp are trademarks of Dell Inc.; Intel, Pentium, and Celeron are registered trademarks of Intel Corporation; Microsoft, Windows NT, MS-DOS, and Windows are registered trademarks of Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

Models: DHP, DHS, DCNE, DHM, and DCSM

September 2005 Y2952 Rev. A05

Dell™ OptiPlex™ GX280 Systems User's Guide

Small Desktop Computer

Documentation for Your Computer

Finding Information Specifications

Cleaning Your Computer

Advanced Features

LegacySelect Technology Control Manageability

Security

Password Protection System Setup

Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading

Power Management

About Your Computer	Adding and Removing Parts
Front View	Before You Begin
Back View	Opening the Computer Cover
Inside Your Computer	Battery
System Board Components	Chassis Intrusion Switch
Attaching and Removing the Computer Stand	Drives
	I/O Panel
	Memory
	PCI and PCI Express Cards and Serial Port Adapters
	Power Supply
	Processor
	System Board
	Closing the Computer Cover
Computer and Software Problems Additional Information
Troubleshooting Tools and Utilities	Microsoft® Windows® XP Features
Solving Problems	Glossary
Reinstalling Drivers and the Operating System	Warranty
Getting Help	FCC Notices (U.S. Only)

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the "Glossary."

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

The Drivers and Utilities CD (ResourceCD), operating system media, and Quick Reference Guides are optional, and as such may not ship with all computers.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Models: DHP, DHS, DCNE, DHM, and DCSM

September 2005 Y2952 Rev. A05

Dell™ OptiPlex™ GX280 Systems User's Guide

Desktop Computer

Documentation for Your Computer

Finding Information Specifications

Cleaning Your Computer

Advanced Features

LegacySelect Technology Control Manageability

Security

Password Protection System Setup

Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading

Power Management

About Your Computer	Adding and Removing Parts
Front View	Before You Begin
Back View	Opening the Computer Cover
Inside Your Computer	Battery
System Board Components	Chassis Intrusion Switch
	Drives
	I/O Panel
	Memory
	PCI and PCI Express Cards and Serial Port Adapters
	Power Supply
	Processor
	System Board
	Closing the Computer Cover
Computer and Software Problems Additional Information
Troubleshooting Tools and Utilities	Microsoft® Windows® XP Features
Solving Problems	Glossary
Reinstalling Drivers and the Operating System	Warranty
Getting Help	FCC Notices (U.S. Only)

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the "Glossary."

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

The Drivers and Utilities CD (ResourceCD), operating system media, and Quick Reference Guides are optional, and as such may not ship with all computers.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Models: DHP, DHS, DCNE, DHM, and DCSM

September 2005 Y2952 Rev. A05

Dell™ OptiPlex™ GX280 Systems User's Guide

Small Mini-Tower

Computer

Documentation for Your Computer

Finding Information Specifications

Cleaning Your Computer

Advanced Features

LegacySelect Technology Control Manageability

Security

Password Protection System Setup

Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading

Power Management

About Your Computer	Adding and Removing Parts
Front View	Before You Begin
Back View	Opening the Computer Cover
Inside Your Computer	Battery
System Board Components	Chassis Intrusion Switch
Front-Panel Door and Hinge Arms	Drives
	I/O Panel
	Memory
	PCI and PCI Express Cards and Serial Port Adapters
	Power Supply
	Processor
	System Board
	Closing the Computer Cover
Computer and Software Problems Additional Information
Troubleshooting Tools and Utilities	Microsoft® Windows® XP Features
Solving Problems	Glossary
Reinstalling Drivers and the Operating System	Warranty
Getting Help	FCC Notices (U.S. Only)

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the "Glossary."

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

The Drivers and Utilities CD (ResourceCD), operating system media, and Quick Reference Guides are optional, and as such may not ship with all computers.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Models: DHP, DHS, DCNE, DHM, and DCSM

September 2005 Y2952 Rev. A05

Dell™ OptiPlex™ GX280 Systems User's Guide

Mini-Tower Computer

Documentation for Your Computer

Finding Information Specifications

Cleaning Your Computer

Advanced Features

LegacySelect Technology Control Manageability

Security

Password Protection System Setup

Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading

Power Management

About Your Computer	Adding and Removing Parts
Front View	Before You Begin
Back View	Opening the Computer Cover
Inside Your Computer	Battery
System Board Components	Chassis Intrusion Switch
	Drives
	I/O Panel
	Memory
	PCI and PCI Express Cards and Serial Port Adapters
	Power Supply
	Processor
	System Board
	Closing the Computer Cover
Computer and Software Problems Additional Information
Troubleshooting Tools and Utilities	Microsoft® Windows® XP Features
Solving Problems	Glossary
Reinstalling Drivers and the Operating System	Warranty
Getting Help	FCC Notices (U.S. Only)

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the "Glossary."

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

The Drivers and Utilities CD (ResourceCD), operating system media, and Quick Reference Guides are optional, and as such may not ship with all computers.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Models: DHP, DHS, DCNE, DHM, and DCSM

September 2005 Y2952 Rev. A05

Back to Contents Page

Finding Information

Dell™ OptiPlex™ GX280 Systems User's Guide

What Are You Looking For?

A diagnostic program for my computer

Drivers for my computer

My computer documentation My device documentation

How to set up my computer

Troubleshooting information

How to run the Dell Diagnostics

Error codes and diagnostic lights Tools and utilities

Warranty information

Safety instructions

Regulatory information

Ergonomics information

End User License Agreement

How to remove and replace parts

Technical specifications How to configure

Find it Here

Drivers and Utilities CD (also known as the ResourceCD)

Documentation and drivers are already installed on your computer. You can use the CD to reinstall drivers, run the Dell Diagnostics, or access your documentation.

Readme files may be included on your CD to provide last-minute updates about technical changes to your computer or advanced technical-reference material for technicians or experienced users.

NOTE: The Drivers and Utilities CD is optional and may not ship with all computers.

Quick Reference Guide

NOTE: This document is available as a PDF at support.dell.com.

NOTE: The Quick Reference Guide is optional and may not ship with all computers.

Dell™ Product Information Guide

User's Guide

Microsoft® Windows® XP Help and Support Center

system settings How to troubleshoot and solve problems

Operating system updates and patches

Service Tag and

Express Service Code

Microsoft Windows

License Label

1.Click the Start button and click Help and Support.

2.Click User's and system guides and click User's guides.

Desktop System Software (DSS)

The DSS is located on the Drivers and Utilities CD and on the Dell Support website.

Service Tag and Microsoft Windows License

These labels are located on your computer.

Use the Service Tag to identify your computer when you use support.dell.com or contact technical support.

Enter the Express Service Code to direct your call when contacting technical support. The Express Service Code is not available in all countries.

Use the number on the Microsoft Windows License Label if you reinstall your operating system.

Latest drivers for my computer

Answers to technical service and support questions

Online discussions with other users and technical support Documentation for my computer

Dell Support Website — support.dell.com

The Dell Support website provides several online tools, including:

Solutions — Troubleshooting hints and tips, articles from technicians, and online courses

Community — Online discussion with other Dell customers

Upgrades — Upgrade information for components, such as memory, the hard drive, and the operating system

Customer Care — Contact information, order status, warranty, and repair information Downloads — Drivers, patches, and software updates

Reference — Computer documentation, product specifications, and white papers

Service call status and support history

Top technical issues for my computer Frequently asked questions

File downloads Details on my computer configuration Service contract for my computer

Dell Premier Support Website — premiersupport.dell.com

The Dell Premier Support website is customized for corporate, government, and education customers. This website may not be available in all regions.

How to use Windows XP

Documentation for my computer Documentation for devices (such as a modem)

How to reinstall my operating system

Windows Help and Support Center

1.Click the Start button and click Help and Support.

2.Type a word or phrase that describes your problem and click the arrow icon.

3.Click the topic that describes your problem.

4.Follow the instructions on the screen.

Operating System CD

The operating system is already installed on your computer. To reinstall your operating system, use the Operating System CD. See "Reinstalling Microsoft Windows XP" for reinstallation instructions.

After you reinstall your operating system, use the Drivers and Utilities CD to reinstall drivers for the devices that came with your computer.

Your operating system license label is located on your computer.

NOTE: The operating system media is optional and may not ship with all computers

Back to Contents Page

Specifications

Dell™ OptiPlex™ GX280 Systems User's Guide

Microprocessor
Microprocessor type	Intel® Pentium® 4; design provides for
	future Dell-supported upgrades.
Level 1 (L1) cache	32 KB
Level 2 (L2) cache	1 MB pipelined-burst, eight-way set
	associative, write-back SRAM
Memory
Type	400 & 533 MHz DDR2 SDRAM
Memory connectors	small form-factor computer: 2
	small desktop computer: 4
	desktop computer: 4
	small mini-tower computer: 4
	mini-tower computer: 4
Memory capacities	128 MB, 256 MB, 512 MB, or 1 GB non-
	ECC
Minimum memory	dual-channel: 256 MB
	single-channel: 128 MB
Maximum memory	small form-factor computer: 2 GB
	small desktop computer: 4 GB
	desktop computer: 4 GB
	small mini-tower computer: 4 GB
	mini-tower computer: 4 GB
BIOS address	F0000h
Computer Information
Chipset	Intel Grantsdale
Data bus width	64 bits
Address bus width	32 bits
DMA channels	eight
Interrupt levels	24
BIOS chip (NVRAM)	4-Mb
Memory speed	400 & 533 MHz
NIC	integrated network interface with ASF
	1.03 support as defined by DMTF.
	Capable of 10/100/1000 communication:
	Green — A good connection exists
	between a 10-Mbps network and
	the computer.
	Orange — A good connection exists
	between a 100-Mbps network and
	the computer.
	Yellow — A good connection exists

	between a 1 Gb (or 1000-Mbps)
	network and the computer.
	Off — The computer is not
	detecting a physical connection to
	the network.
Video
Video
Type	integrated Intel Extreme Graphics or PCI
	Express x16 DVI video card
Audio
Type	AC97, Sound Blaster emulation
Stereo conversion	16-bit analog-to-digital; 20-bit digital-to-
	analog
Controllers
Drives	small form-factor: one serial ATA
	controller supporting one device and one
	parallel Ultra ATA/100 IDE supporting two
	devices per channel with one channel
	small desktop: one serial ATA controllers
	supporting one device each and one
	parallel Ultra ATA/100 IDE supporting two
	devices per channel with one channel
	desktop: two serial ATA controllers
	supporting one device each and one
	parallel Ultra ATA/100 IDE supporting two
	devices per channel with one channel.
	small mini-tower: two serial ATA
	controllers supporting one device each
	and one parallel Ultra ATA/100 IDE
	supporting two devices per channel with
	one channel
	mini-Tower: two serial ATA controllers
	supporting one device each and one
	parallel Ultra ATA/100 IDE supporting two
	devices per channel with one channel
Expansion Bus
Bus type	PCI 2.2
	SATA 1.0a
	USB 2.0
	PCI Express 1.0a
Bus speed	PCI: 33 MHz
	SATA: 1.5 Gbps
	USB: 480 Mbps
	PCI Express x1: 5 Gbps
	PCI Express x16: 80 Gbps
Small Form-Factor computer	low-profile cards supported
PCI
connector	one

connector size

connector data width (maximum)

PCI Express

connector

connector size

connector data width (maximum)

Small Desktop computer

PCI

connectors

connector size

connector data width (maximum)

PCI Express

connector connector size

connector data width (maximum)

Desktop computer

PCI connectors

connector size connector data width (maximum)

PCI Express

connectors

connector size

connector data width

Small Mini-Tower

PCI

connectors

connector size

connector data width (maximum)

PCI Express

connector

connector size

connector data width (maximum)

Mini-Tower

PCI connectors

120 pins

32 bits

one x16

164 pins

16 PCI Express lanes half-length cards supported

one or two (depending on purchase) 120 pins

32 bits

one x16 and an optional x1

120 pins (x16) and an optional 36 pins

(x1)

16 PCI Express lanes (x16) and an optional one PCI Express lane (x1)

half-height cards supported half-length, full-height cards supported with optional with card cage

two (without card cage) two (with card cage)

120 pins 32 bits

one x16

120 pins (x16)

16 PCI Express lanes (x16) full-height cards supported

three 120 pins 32 bits

one x1 and one x16

36 pins (x1) and 120 pins (x16)

one PCI Express lane (x1) and 16 PCI Express lanes (x16)

full-height cards supported

two

connector size	120 pins
connector data width	32 bits
(maximum)
PCI Express
connectors	one x1 and one x16
connector size	36 pins (x1) and 120 pins (x16)
connector date width	one PCI Express lane (x1) and 16 PCI
(maximum)	Express lanes (x16)
(maximum)
Drives
Externally accessible:
Small Form-Factor computer	one bay for a slimline floppy drive
	one bay for a slimline CD/DVD drive
Small Desktop computer	one 3.5-inch bay
	one 5.25-inch bay
Desktop computer	one 3.5-inch drive
	one bay for CD/DVD or optional second
	Hard Drive
Small Mini-Tower computer	two 3.5-inch drive bays
	two 5.25-inch drive bays
Mini-Tower computer	one 3.5-inch drive bay
	two 5.25-inch drive bays
Internally accessible:
Small Form-Factor computer	one bay for a 1-inch-high hard drive
Small Desktop computer	one bay for a 1-inch-high hard drive
Desktop computer	one bay for a 1-inch-high hard drive
Small Mini-Tower computer	two bays for 1-inch high hard drives
Mini-Tower computer	two bays for 1-inch high hard drives
Connectors
External connectors:
Serial	9-pin connector; 16550C-compatible
Parallel	25-hole connector (bidirectional)
Video	15-hole connector
Network adapter	RJ45 connector
Optional PS/2 with secondary serial	small form-factor computer: one 6-pin
port adapter	mini-DIN with a Y-adapter
	small desktop, small mini-tower, desktop,
	and mini-tower: two 6-pin mini-DINs
USB	two front-panel and six back-panel USB
	2.0–compliant connectors
Audio	three connectors for line-in, line-out, and
	microphone; one front-panel connector
	for headphones
System board connectors:

Primary IDE drive	40-pin connector
Serial ATA	small form-factor computer: one 7-pin
	connector
	small desktop computer: one 7-pin
	connectors
	desktop computer: two 7-pin connectors
	small mini-tower: two 7-pin connectors
	mini-tower: two 7-pin connectors
Floppy drive	34-pin connector
Serial	12-pin connector for optional second
	serial port card
Fan	5-pin connector
PCI 2.2	120-pin connector
CD drive audio interface	4-pin connector
Front audio	10-pin connector (For the optional audio
	customer kit)
Front panel	40-pin connector
Key Combinations
<Ctrl><Alt><Del>	If running Microsoft® Windows® XP,
	brings up the Windows Security window.
	If in MS-DOS® mode, restarts (reboots)
	the computer
<F2> or <Ctrl><Alt><Enter>	starts embedded system setup (during
	start-up only)
<Ctrl><Alt><b>	automatically starts the computer from
	the network environment specified by the
	remote boot environment (PXE) rather
	than from one of the devices in the
	system setup Boot Sequence option
	(during start-up only)
<F12> or <Ctrl><Alt><F8>	displays a boot device menu that allows
	the user to enter a device for a single
	boot (during start-up only) as well as
	options to run hard-drive and system
	diagnostics
Controls and Lights

Power control

Power light

Hard-drive access light

Link integrity light (on integrated network adapter)

push button

green light—blinking green in sleep state; solid green for power-on state

amber light—blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem (see Power Problems)

green

green light for 10-Mb operation; orange light for 100-Mb operation; yellow light for a 1000-Mb (1-Gb) operation

Activity light (on integrated network	yellow blinking light
adapter)
Diagnostic lights	small form-factor, small desktop, and

Standby power light

Power

DC power supply:

Wattage

Heat dissipation

Voltage

Backup battery

Physical

Small Form-Factor computer:

Height

Width

Depth

Weight

Small Desktop computer:

Height

Width

Depth

Weight

Desktop computer

Height

Width

Depth Weight

Small Mini-Tower computer:

small mini-tower computers: four lights on the back panel

desktop and mini-towercomputers: four lights on the front panel

AUX_PWR on the system board

small form-factor computer: 160 W small desktop computer: 210 W desktop computer: 280 W

small mini-tower computer with processor speeds of 3.2 GHz or lower: 250 W

small mini-tower computer with processor speeds of 3.4 GHz or higher: 305 W mini-tower computer: 305 W

small form-factor computer: 546 BTU/hr small desktop computer: 717 BTU/hr desktop computer: 150W max

small mini-tower computer with processor speeds of 3.2 GHz or lower: 853 BTU/hr small mini-tower computer with processor speeds of 3.4 GHz or higher: 1041 BTU/hr mini-tower computer: 150W max

fixed-voltage power supply—110 V at 50/60 Hz

manual selection and auto-sensing power supplies—90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz; 100 V at 50/60 Hz for Japanese computers

3-V CR2032 lithium coin cell

9.0 cm (3.57 inches)

31.9 cm (12.54 inches)

35.4 cm (13.93 inches) 6 kg (14 lbs)

10.6 cm (4.2 inches)

38.9 cm (15.3 inches)

43.2 cm (17 inches) 9.9 kg (22 lbs)

11.4 cm (4.5 inches)

39.9 cm (15.7 inches)

35.3 cm (13.9) inches 10.4 kg (23 lbs)

Height	42.5 cm (16.7 inches)
Width	18.1 cm (7.1 inches)
Depth	44.7 cm (17.6 inches)
Weight	12.7 kg (28 lbs)
Mini-Tower computer
Height	41.4 cm (16.3 inches)
Width	18.5 cm (7.3 inches)
Depth	43.9 cm (17.3 inches)
Weight	12.34 kg (27.2 lbs)
Environmental
Temperature:
Operating	10° to 35°C (50° to 95°F)
	NOTE: At 35°C (95°F), the maximum
	operating altitude is 914 m (3000 ft).
Storage	–40° to 65°C (–40° to 149°F)
Relative humidity	20% to 80% (noncondensing)
Maximum vibration:
Operating	0.25 G at 3 to 200 Hz at 0.5 octave/min
Storage	0.5 G at 3 to 200 Hz at 1 octave/min
Maximum shock:
Operating	bottom half-sine pulse with a change in
	velocity of 20 inches/sec (50.8 cm/sec)
Storage	27-G faired square wave with a velocity
	change of 200 inches/sec (508 cm/sec)
Altitude:
Operating	–15.2 to 3048 m (–50 to 10,000 ft)
Storage	–15.2 to 10,668 m (–50 to 35,000 ft)

Back to Contents Page

Back to Contents Page

Cleaning Your Computer

Dell™ OptiPlex™ GX280 Systems User's Guide

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

Computer, Keyboard, and Monitor

CAUTION: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water. Do not use liquid or aerosol cleaners, which may contain flammable substances.

Use a vacuum cleaner with a brush attachment to gently remove dust from the slots and holes on your computer and from between the keys on the keyboard.

NOTICE: Do not wipe the display screen with any soap or alcohol solution. Doing so may damage the antiglare coating.

To clean your monitor screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the monitor's antistatic coating.

Wipe the keyboard, computer, and plastic part of the monitor with a soft cleaning cloth moistened with a solution of three parts water and one part dish washing detergent.

Do not soak the cloth or let water drip inside your computer or keyboard.

Mouse

If your screen cursor skips or moves abnormally, clean the mouse. To clean a non-optical mouse:

1.Turn the retainer ring on the underside of your mouse counterclockwise, and then remove the ball.

2.Wipe the ball with a clean, lint-free cloth.

3.Blow carefully into the ball cage to dislodge dust and lint.

4.If the rollers inside the ball cage are dirty, clean the rollers with a cotton swab moistened lightly with isopropyl alcohol.

5.Re-center the rollers in their channels if they are misaligned. Ensure that fluff from the swab is not left on the rollers.

6.Replace the ball and retainer ring, and turn the retainer ring clockwise until it clicks into place.

Floppy Drive

NOTICE: Do not attempt to clean drive heads with a swab. You might accidentally mis-align the heads, which prevents the drive from operating.

Clean your floppy drive using a commercially available cleaning kit. These kits contain pretreated floppy disks to remove contaminants that accumulate during normal operation.

CDs and DVDs

NOTICE: Always use compressed air to clean the lens in the CD/DVD drive, and follow the instructions that come with the compressed air. Never touch the lens in the drive.

If you notice problems, such as skipping, with the playback quality of your CDs or DVDs, try cleaning the discs. 1. Hold the disc by its outer edge. You can also touch the inside edge of the center hole.

NOTICE: To prevent damaging the surface, do not wipe in a circular motion around the disc.

2.With a soft, lint-free cloth, gently wipe the bottom of the disc (the unlabeled side) in a straight line from the center to the outer edge of the disc.

For stubborn dirt, try using water or a diluted solution of water and mild soap. You can also purchase commercial products that clean discs and provide some protection from dust, fingerprints, and scratches. Cleaning products for CDs are safe to use on DVDs.

Back to Contents Page

Advanced Features

Dell™ OptiPlex™ GX280 Systems User's Guide

LegacySelect Technology Control	Booting to a USB Device
Manageability	Clearing Forgotten Passwords
Security	Clearing CMOS Settings
Password Protection	Hyper-Threading
System Setup	Power Management

LegacySelect Technology Control

LegacySelect technology control offers legacy-full, legacy-reduced, or legacy-free solutions based on common platforms, hard-drive images, and help desk procedures. Control is provided to the administrator through system setup, Dell OpenManage™ IT Assistant, or Dell™ custom factory integration.

LegacySelect allows administrators to electronically activate or deactivate connectors and media devices that include serial and USB connectors, a parallel connector, a floppy drive, PCI slots, and a PS/2 mouse. Connectors and media devices that are deactivated make resources available. You must restart the computer to effect the changes.

Manageability

Alert Standard Format

ASF is a DMTF management standard that specifies "pre-operating system" or "operating system-absent" alerting techniques. The standard is designed to generate an alert on potential security and fault conditions when the operating system is in a sleep state or the system is powered down. ASF is designed to supersede previous operating system-absent alerting technologies.

Your computer supports the following ASF version 1.03 alerts and remote capabilities:

Alert

Chassis: Chassis Intrusion – Physical Security

Violation/Chassis Intrusion – Physical Security

Violation Event Cleared

CPU: Emergency Shutdown Event

Cooling Device: Generic Critical Fan

Failure/Generic Critical Fan Failure Cleared

Temperature: Generic Critical Temperature

Problem/Generic Critical Temperature Problem

Cleared

Battery Low

Description

The computer chassis with the chassis intrusion feature installed and enabled has been opened or the chassis intrusion alert has been cleared.

The processor temperature is too hot and the power supply has shut down.

The fan speed (rpm) is out of limits or the fan speed (rpm) problem has been resolved.

The computer temperature is out of limits or the computer temperature problem has been resolved.

The system battery has reached a voltage of 2.2V or lower.

For more information about Dell's ASF implementation, see the ASF User's Guide and the ASF Administrator's Guide, which are available on the Dell Support website at support.dell.com.

Dell OpenManage IT Assistant

IT Assistant configures, manages, and monitors computers and other devices on a corporate network. IT Assistant manages assets, configurations, events (alerts), and security for computers equipped with industry-standard management software. It supports instrumentation that conforms to SNMP, DMI, and CIM industry standards.

Dell OpenManage Client instrumentation, which is based on DMI and CIM, is available for your computer. For information on IT Assistant, see the Dell OpenManage IT Assistant User's Guide available on the Dell Support website at support.dell.com.

Dell OpenManage Client Instrumentation

Dell OpenManage Client Instrumentation is software that enables remote management programs such as IT Assistant to do the following:

Access information about your computer, such as how many processors it has and what operating system it is running

Monitor the status of your computer, such as listening for thermal alerts from temperature probes or hard-drive failure alerts from storage devices

Change the state of your computer, such as updating its BIOS or shutting it down remotely

A managed system is one that has Dell OpenManage Client Instrumentation set up on a network that uses IT Assistant. For information about Dell OpenManage Client Instrumentation, see the Dell OpenManage Client Instrumentation User's Guide available on the Dell Support website at support.dell.com.

Security

Chassis Intrusion Detection

NOTE: When the admin password is enabled, you must know the admin password before you can reset the Chassis Intrusion setting.

This feature, if installed and enabled, detects that the chassis was opened and alerts the user. To change the Chassis Intrusion setting:

1.Enter system setup.

2.Press the down-arrow keys to move to the System Security option.

3.Press <Enter> to access the System Security option's pop-up menu.

4.Press the down-arrow key to move to the Chassis Intrusion setting.

5.Press <Enter> to select an option setting.

6.Press <Enter> again after you update the option setting.

7.Exit and save system setup.

Option Settings

On — If the computer cover is opened, the setting changes to Detected, and the following alert message displays during the boot routine at the next computer start-up:

Alert! Cover was previously removed.

To reset the Detected setting, enter system setup. In the Chassis Intrusion option, press the leftor right-arrow key to select Reset, and then choose On, On-Silent, or Off.

On-Silent (default) — If the computer cover is opened, the setting changes to Detected. No alert message appears during the boot sequence at the next computer start-up.

Off — No intrusion monitoring occurs and no messages appear.

Padlock Ring and Security Cable Slot

Use one of the following methods to secure your computer:

Use a padlock alone or a padlock and looped security cable with the padlock ring.

A padlock alone prevents the computer from being opened.

A security cable looped around a stationary object is used in conjunction with a padlock to prevent unauthorized movement of the computer.

Attach a commercially available antitheft device to the security cable slot on the back of the computer.

NOTE: Before you purchase an antitheft device, make sure that it works with the security cable slot on your computer.

Antitheft devices usually include a segment of metal-stranded cable with an attached locking device and key. The documentation that comes with the device contains instructions for installing it.

Password Protection

NOTICE: Although passwords provide security for the data on your computer, they are not foolproof. If your data requires more security, it is your responsibility to obtain and use additional forms of protection, such as data encryption programs.

System Password

NOTICE: If you leave your computer running and unattended without having a system password assigned, or if you leave your computer unlocked so that someone can disable the password by changing a jumper setting, anyone can access the data stored on your hard drive.

Option Settings

You cannot change or enter a new system password if either of the following two options is displayed:

Set — A system password is assigned.

Disabled — The system password is disabled by a jumper setting on the system board.

You can only assign a system password when the following option is displayed:

Not Set — No system password is assigned and the password jumper on the system board is in the enabled position (the default).

Assigning a System Password

To escape from the field without assigning a system password, press <Tab> or the <Shift><Tab> key combination to move

to another field, or press <Esc> at any time before you complete step 5.

1.Enter system setup and verify that Password Status is set to Unlocked.

2.Highlight System Password, and then press the leftor right-arrow key.

The option heading changes to Enter Password, followed by an empty 32-character field in square brackets.

3. Type your new system password.

You can use up to 32 characters. To erase a character when entering your password, press <Backspace> or the leftarrow key. The password is not case sensitive.

Certain key combinations are not valid. If you enter one of these combinations, the speaker emits a beep.

As you press each character key (or the spacebar for a blank space), a placeholder appears in the field.

4. Press <Enter>.

If the new system password is less than 32 characters, the whole field fills with placeholders. Then the option heading changes to Verify Password, followed by another empty 32-character field in square brackets.

5. To confirm your password, type it a second time and press <Enter>.

The password setting changes to Set.

6. Exit system setup.

Password protection takes effect when you restart the computer.

Typing Your System Password

When you start or restart your computer, one of the following prompts appears on the screen.

If Password Status is set to Unlocked:

Type in the password and

- press <ENTER> to leave password security enabled. - press <CTRL><ENTER> to disable password security. Enter password:

If Password Status is set to Locked:

Type the password and press <Enter>.

If you have assigned an admin password, the computer accepts your admin password as an alternate system password.

If you type a wrong or incomplete system password, the following message appears on the screen:

** Incorrect password. **

If you again type an incorrect or incomplete system password, the same message appears on the screen. The third and subsequent times you type an incorrect or incomplete system password, the computer displays the following message:

** Incorrect password. **

Number of unsuccessful password attempts: 3 System halted! Must power down.

Even after your computer is turned off and on, the previous message is displayed each time you type an incorrect or incomplete system password.

NOTE: You can use Password Status in conjunction with System Password and Admin Password to further protect your computer from unauthorized changes.

Deleting or Changing an Existing System Password

1.Enter system setup and verify that Password Status is set to Unlocked.

2.Restart your computer.

3.When prompted, type the system password.

4.Press <Ctrl><Enter> to disable the existing system password.

5.Confirm that Not Set is displayed for the System Password option.

If Not Set is displayed, the system password is deleted. If Not Set is not displayed, press <Alt><b> to restart the computer, and then repeat step 3 through step 5.

To assign a new password, follow the procedure in "Assigning a System Password." 6. Exit system setup.

Admin Password

Option Settings

You cannot change or enter a new admin password if either of the following two options is displayed:

Set — An admin password is assigned.

Disabled — The admin password is disabled by a jumper setting on the system board.

You can only assign an admin password when the following option is displayed:

Not Set — No admin password is assigned and the password jumper on the system board is in the enabled position (the default).

Assigning an Admin Password

The admin password can be the same as the system password.

NOTE: If the two passwords are different, the admin password can be used as an alternate system password. However, the system password cannot be used in place of the admin password.

1.Enter system setup and verify that Admin Password is set to Not Set.

2.Highlight Admin Password and press the leftor right-arrow key.

The computer prompts you to type and verify the password. If a character is not permitted, the computer emits a beep.

3. Type and then verify the password.

After you verify the password, the Admin Password setting changes to Set. The next time you enter system setup, the computer prompts you for the admin password.

4. Exit system setup.

A change to Admin Password becomes effective immediately (no need to restart the computer).

Operating Your Computer With an Admin Password Enabled

When you enter system setup, the Admin Password option is highlighted, prompting you to type the password. If you do not type the correct password, the computer lets you view, but not modify, system setup options.

NOTE: You can use Password Status in conjunction with Admin Password to protect the system password from unauthorized changes.

Deleting or Changing an Existing Admin Password

To change an existing admin password, you must know the admin password.

1.Enter system setup.

2.Type the admin password at the prompt.

3.Highlight Admin Password and press the leftor right-arrow key to delete the existing admin password.

The setting changes to Not Set.

To assign a new admin password, perform the steps in "Assigning an Admin Password."

4. Exit system setup.

Disabling a Forgotten Password and Setting a New Password

To reset system and/or admin passwords, see "Clearing Forgotten Passwords."

System Setup

Overview

Use system setup as follows:

To change the system configuration information after you add, change, or remove any hardware in your computer

To set or change a user-selectable option such as the user password

To read the current amount of memory or set the type of hard drive installed

Before you use system setup, it is recommended that you write down the system setup screen information for future reference.

Entering System Setup

1.Turn on (or restart) your computer.

2.When the blue DELL™ logo appears, press <F2> immediately.

If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again.

System Setup Screens

The system setup screen displays current or changeable configuration information for your computer. Information on the screen is divided into three areas: the options list, active options field, and key functions.

	Options List —	Option
	This field appears	Field —
	on the left side of	This field
	the system setup	contains
	window. The field	information
	is a scrollable list	about each
	containing	option. In
	features that	this field
	define the	you can
	configuration of	view your
	your computer,	current
	including	settings
	installed	and make
	hardware, power	changes to
	conservation,	your
	and security	settings.
	features.	Use the
	Scroll up and	Use the
	Scroll up and	right and
	down the list by	left arrow
	using the up and	keys to
	down arrow keys.	highlight
	As an option is	an option.
	highlighted, the	Press
	Option Field	<Enter> to
	displays more	make that
	information	selection
	about that option	active.
	and the option's
	current and
	available
	settings.

Key Functions

— This field appears below the Option Field and lists keys and their functions within the active system setup field.

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