Lenovo 8142, 8426, 8421, 8145, 8420, 8141, 8095 Operating systems, preinstalled varies by model type

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Expansion

vFour drive bays

vTwo 32-bit peripheral component interconnect (PCI) adapter connectors

vOne PCI Express (x1) adapter connector

vOne PCI Express (x16) graphics adapter connector

Power

v310 W power supply with manual voltage selection switch

vAutomatic 50/60 Hz input frequency switching

vAdvanced Power Management support

vAdvanced Configuration and Power Interface (ACPI) support

Security features

vUser and administrator passwords for BIOS access

vUser and master passwords for hard disk drive (some models)

vSupport for the addition of a padlock to secure the cover

vKeyboard with fingerprint reader (some models, see the Access IBM program for more information)

vCover presence switch (some models)

vStartup sequence control

vStartup without diskette drive, keyboard, or mouse

vUnattended start mode

vDiskette and hard disk I/O control

vSerial and parallel port I/O control

vSecurity profile by device

Preinstalled software

Your computer might come with preinstalled software. If it does, an operating system, device drivers to support built-in features, and other support programs are included.

Operating systems, preinstalled (varies by model type)

Note: Not all countries or regions will have these operating systems.

vMicrosoft® Windows® XP Home

vMicrosoft Windows XP Professional

Operating systems certified or tested for compatibility1

Linux®

1.The operating systems listed here are being certified or tested for compatibility at the time this publication goes to press. Additional operating systems might be identified by Lenovo as compatible with your computer following the publication of this booklet. Corrections and additions to this list are subject to change. To determine if an operating system has been certified or tested for compatibility, check the Web site of the operating system vendor.

Chapter 1. Installing options 3

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Contents User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page Contents Iv User Guide Conditions that require immediate action Important safety informationService General safety guidelinesExtension cords and related devices Power cords and power adaptersBatteries Plugs and outletsHeat and product ventilation CD and DVD drive safetyLithium battery notice Additional safety informationTo connect To disconnect Laser compliance statement Modem safety informationPower supply statement Information resources Overview Xiv User Guide Features Installing optionsMemory Operating systems, preinstalled varies by model type Specifications Tools required Available optionsHandling static-sensitive devices Installing external options Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Obtaining device drivers Connector DescriptionRemoving the cover Identifying parts on the system board Locating componentsInstalling memory Installing options What to do next Installing adaptersWhat to do next Drive specifications Installing internal drivesInstalling a drive User Guide Connecting the first optical drive Connecting a serial ATA hard disk drive Installing security featuresChanging the battery Password protectionPadlock loop User Guide Replacing the cover and connecting the cables Erasing a lost or forgotten password clearing CmosUser Guide Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsIDE Drive Master Password User passwordAdministrator password IDE Drive User PasswordUsing Security Profile by Device Setting, changing, and deleting a passwordSelecting a startup device Selecting a temporary startup device Exiting from the Setup Utility programChanging the startup sequence System programs Updating flashing Bios from a disketteUpdating flashing Bios from your operating system Appendix A. Updating system programsClick Continue Click Downloads and drivers Recovering from a POST/BIOS update failureCleaning an optical mouse Appendix B. Cleaning the mouseCleaning a mouse with a ball User Guide Basic AT commands Appendix C. Manual modem commandsInternal speaker on until carrier detected Low speaker volumeSet Pulse dial as default Set Tone Dial as defaultExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Trademarks Television output noticeIndex Page Page Part Number 19R0462