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If you do not enter the correct password in three tries, the system lets you view, but not modify, the System Setup screens-with the following exceptions: You can still modify the Date, Time, CPU Speed, Num Lock, and Speaker options. If System Password is not enabled and is not locked via the Password Status option, you can assign a system password (however, you cannot disable or change an existing system password). NOTE: You can use the Password Status option in conjunction with Setup Password to protect the system password from unauthorized changes. For more information, see "Password Status" found earlier in this chapter. To delete or change an existing setup password, perform the following steps: The setting changes to Not Enabled. If you forget your system or setup password, you cannot operate your system or change settings in the System Setup program until you remove the computer cover, change the password jumper setting to disable the passwords, and erase the existing passwords. To disable a forgotten password, perform the following steps: Refer to "Jumpers" in Chapter 5 for jumper information and to Figure 5-6 for the location of the password jumper (labeled "PSWD") on the system board. Using the System Setup Program 2-21

Section	Page
Dell OptiPlex GX1 and GX1p Mini Tower Managed PC Systems	1
Safety Instructions	3
When Using Your Computer System	3
Ergonomic Computing Habits	4
When Working Inside Your Computer	5
Battery Warning	6
Protecting Against Electrostatic Discharge	6
Preface	9
About This Guide	9
Warranty and Return Policy Information	10
Other Documents You May Need	10
Notational Conventions	11
Warnings, Cautions, Notes	11
Typographical Conventions	11
Contents	13
Introduction	21
System Features	21
Hardware Features	22
Software Features	24
Manageability Features	25
Dell OpenManage Program	25
PXE	27
Wakeup On LAN	28
Auto Power On	28
Security Features	28
Chassis Intrusion	28
Security Cable Slot and Padlock Ring	29
Passwords	29
Using the Power Switch	30
ENERGY STAR® Compliance	30
Important Note for Windows 95 Users	31
Intel PIIX4 INF Update Installer for Windows 95	31
Accessing Online Documentation	32
Getting Help	33
Using the System Setup Program	35
Entering the System Setup Program	35
System Setup Screens	36
Using the System Setup Program	37
System Setup Options	38
Time	39
Date	39
Diskette Drive A and Diskette Drive B	39
Drives: Primary and Secondary	39
Reserved Memory	40
CPU Speed	41
Num Lock	41
Chassis Intrusion	41
DAC Snoop	42
ACPI	42
Keyboard Errors	42
System Password	42
Password Status	43
Boot Sequence	43
Diskette First	43
Hard Disk Only	43
CD-ROM First	43
Device List	43
Setup Password	46
Auto Power On	46
Power Management	46
Saving Monitor Power	46
Saving EIDE Hard-Disk Drive Power	47
Wakeup On LAN	48
Sound	48
NIC	48
Mouse	48
Serial Port 1 and Serial Port 2	48
Parallel Port	49
Parallel Mode	49
IDE Hard Disk	49
Diskette	49
Speaker	50
System Data Options	50
Using the System Password Feature	50
Assigning a System Password	51
Using Your System Password to Secure Your System	52
Deleting or Changing an Existing System Password	53
Using the Setup Password Feature	54
Assigning a Setup Password	54
Operating With a Setup Password Enabled	54
Deleting or Changing an Existing Setup Password	55
Disabling a Forgotten Password	55
Responding to Error Messages	56
Using the ISA Configuration Utility	57
Quick Start	58
About the ICU	59
ICU Database	59
When to Run the ICU	59
Preparing to Use the ICU	60
Backing Up the ICU Diskette	60
Starting the ICU	61
Accessing Help	61
Making Selections in the ICU	61
Adding a Listed Card	62
Adding an Unlisted Card	65
Modifying a Card	67
Removing a Card	68
Viewing Resources	69
Saving the System Configuration	70
Exiting From the ICU	70
Locking and Unlocking Cards	70
Locking and Unlocking All Resources	71
Locking and Unlocking Configuration Resources	71
Using Integrated Devices	73
Video Controller	73
Reinstalling DirectX and Video Drivers	73
Audio Controller	75
NIC	75
Network Cable Requirements	76
Setting the Network Frame Type	76
Using 3Com EtherDisk XL Version 3.01 Diskettes	76
Configuring the NIC	77
Windows NT 4.0 NIC	77
Windows NT 3.5x NIC	78
Windows 95 or Windows 98 NIC	79
Windows for Workgroups NIC	80
MS-DOS NIC	81
Working Inside Your Computer	83
Before You Begin	83
Safety First—For You and Your Computer	83
Unpacking Your Hardware Option	84
Removing the Computer Cover	84
Replacing the Computer Cover	86
Inside Your Computer	87
Jumpers	88
Switches	89
System Board and Riser Board Labels	93
Removing and Replacing the Expansion- Card Cage	94
Removing the Expansion-Card Cage	94
Replacing the Expansion-Card Cage	95
Rotating the Power Supply Away From the System Board	96
Installing System Board Options	97
Expansion Cards	98
Expansion Slots	99
Installing an Expansion Card	100
Removing an Expansion Card	102
Adding Memory	103
Performing a Memory Upgrade	104
Installing a DIMM	106
Removing a DIMM	106
Adding Video Memory (OptiPlex GX1 Only)	107
Upgrading the Microprocessor	108
Replacing the System Battery	110
Installing Drives	115
Removing and Replacing the Front Bezel	116
Removing and Replacing Front-Panel Inserts	117
Connecting Drives	118
Installing a Drive in a 5.25-Inch Drive Bay	120
Installing an EIDE Hard-Disk Drive	124
EIDE Drive Addressing	125
Installing an EIDE Hard-Disk Drive in the Hard-Disk Drive Bracket	125
Partitioning and Logically Formatting Your EIDE Hard- Disk Drive	129
Installing SCSI Devices	130
SCSI Configuration Guidelines	130
SCSI ID Numbers	130
SCSI Cable and SCSI Termination	131
General Procedure for Installing SCSI Devices	132
Partitioning and Formatting SCSI Hard-Disk Drives	134
Technical Specifications	135
ISA Configuration Utility Messages	141
ICU Error Messages	141
Configuration Manager Messages	146
Regulatory Notices	151
FCC Notices (U.S. Only)	152
Class A	153
Class B	153
IC Notice (Canada Only)	153
CE Notice (European Union)	154
EN 55022 Compliance (Czech Republic Only)	155
VCCI Notice (Japan Only)	155
Class A ITE	155
Class B ITE	156
MOC Notice (South Korea Only)	156
Class A Device	157
Class B Device	157
Polish Center for Testing and Certification Notice	158
Wymagania Polskiego Centrum BadaÒ i Certyfikacji	158
Pozosta³e instrukcje bezpieczeÒstwa	158
NOM Information (Mexico Only)	159
Información para NOM (únicamente para México)	160
Warranty, Return Policy, and Year 2000 Statement of Compliance	161
Limited Three-Year Warranty (U.S. and Canada Only)	161
Coverage During Year One	161
Coverage During Years Two and Three	162
General Provisions	162
Total Satisfaction” Return Policy (U.S. and Canada Only)	163
Year 2000 Statement of Compliance for Dell-Branded Hardware Products	164
Previous Products	164
Software	165
Additional Information	165