Restoring Windows Vista.

13 Adding and Replacing Parts
Before You Begin Recommended Tools

176 178

Turning Off Your Computer
Before Working Inside Your Computer Hard Drive
Removing the Hard Drive. Replacing the Hard Drive.
Returning a Hard Drive to Dell Optical Drive.
Removing the Optical Drive Hinge Cover
Removing the Hinge Cover Replacing the Hinge Cover Keyboard
Removing the Keyboard Replacing the Keyboard Memory
Removing the DIMM A Memory Module. Replacing the DIMM A Memory Module Removing the DIMM B Memory Module. Replacing the DIMM B Memory Module Subscriber Identity Module

Wireless Mini-Cards

190 190
Removing a WLAN Card Replacing a WLAN Card
Removing a Mobile Broadband or WWAN Card. Replacing a WWAN Card Removing a WPAN Card Replacing a WPAN Card Flash Cache Module
Removing the FCM Replacing the FCM
Internal Card With Bluetooth Wireless Technology. Removing the Card Coin-Cell Battery
Removing the Coin-Cell Battery
14 Dell QuickSet Features

193 195

196 196
15 Traveling With Your Computer
Identifying Your Computer Packing the Computer. Travel Tips

Traveling by Air.

16 Getting Help.
Obtaining Assistance DellConnect.
Technical Support and Customer Service Online Services.

AutoTech Service.

Automated Order-Status Service Problems With Your Order. Product Information
Returning Items for Warranty Repair or Credit Before You Call Contacting Dell
17 Specifications 18 Appendix

205 215

Using the System Setup Program System Setup Screen.
Viewing the System Setup Screen Commonly Used Options Cleaning Your Computer. Touch Pad Mouse Media
Computer, Keyboard, and Display
Dell Technical Support Policy (U.S. Only)

221 223

Definition of "Dell-Installed" Software and Peripherals. Definition of "Third-Party" Software and Peripherals. FCC Notice (U.S. Only). FCC Class B.
Macrovision Product Notice

Glossary. 225 Index

Finding Information
NOTE: Additional information may ship with your computer.
What Are You Looking For? A diagnostic program for my computer Drivers for my computer Device documentation Notebook System Software (NSS) Find It Here Drivers and Utilities Media
NOTE: Some features may be optional and may not ship with your computer. Some features may not be available in certain countries.

Several devices are available to protect against power fluctuations and failures: Surge protectors Line conditioners Uninterruptible power supplies (UPS)

Surge Protectors

Surge protectors and power strips equipped with surge protection help prevent damage to your computer from voltage spikes that can occur during electrical storms or after power interruptions. Some surge protector manufacturers include warranty coverage for certain types of damage. Carefully read the device warranty when choosing a surge protector. A device with a higher joule rating offers more protection. Compare joule ratings to determine the relative effectiveness of different devices. NOTICE: Most surge protectors do not protect against power fluctuations or power interruptions caused by nearby lightning strikes. When lightning occurs in your area, disconnect the telephone line from the telephone wall connector and disconnect your computer from the electrical outlet. Many surge protectors have a telephone jack for modem protection. See the surge protector documentation for modem connection instructions. NOTICE: Not all surge protectors offer network adapter protection. Disconnect the network cable from the network wall connector during electrical storms.

Line Conditioners

NOTICE: Line conditioners do not protect against power interruptions. Line conditioners are designed to maintain AC voltage at a fairly constant level.
NOTICE: Loss of power while data is being saved to the hard drive may result in data loss or file damage. NOTE: To ensure maximum battery operating time, connect only your computer to a UPS. Connect other devices, such as a printer, to a separate power strip that provides surge protection. A UPS protects against power fluctuations and interruptions. UPS devices contain a battery that provides temporary power to connected devices when AC power is interrupted. The battery charges while AC power is available. See the UPS manufacturer documentation for information on battery operating time and to ensure that the device is approved by Underwriters Laboratories (UL).

Adjusting Brightness

When a Dell computer is running on battery power, you can conserve power by setting the display brightness to the lowest comfortable level. Press <Fn> and the up-arrow key to increase brightness on the integrated display only (not on an external monitor). Press <Fn> and the down-arrow key to decrease brightness on the integrated display only (not on an external monitor). NOTE: Brightness key combinations only affect the display on your portable computer, not monitors or projectors that you attach to your portable computer or docking device. If your computer is connected to an external monitor and you try to change the brightness level, the Brightness Meter may appear, but the brightness level on the external device does not change.

NOTICE: You can damage an external monitor by using an unsupported refresh rate. Before adjusting the refresh rate on an external monitor, see the users guide for the monitor.
Using Both a Monitor and Your Computer Display
You can attach an external monitor or projector to your computer and use it as an extension of your display (known as dual independent display or extended desktop mode). This mode allows you to use both screens independently and drag objects from one screen to the other, effectively doubling the amount of viewable work space. To use extended desktop mode, perform the steps in the following section that corresponds to the operating system your computer is using.
1 Connect the external monitor, TV, or projector to the computer. 2 Click Start Settings Control Panel. 3 Under Pick a category, click Appearance and Themes. 4 Under Pick a task., click the area you want to change, or under or pick a Control Panel icon, click Display. 5 In the Display Properties window, click the Settings tab. NOTE: If you choose a resolution or color palette that is higher than the display supports, the settings adjust automatically to the closest supported values. For more information, see your operating system documentation. 6 Click the monitor 2 icon, click the Extend my Windows desktop. check box, and then click Apply. 7 Change Screen Area to the appropriate sizes for both displays and click Apply. 8 If prompted to restart the computer, click Apply the new color setting without restarting and click OK. 9 If prompted, click OK to resize your desktop. 10 If prompted, click Yes to keep the settings. 11 Click OK to close the Display Properties window.
To disable dual independent display mode: 1 Click the Settings tab in the Display Properties window. 2 Click the monitor 2 icon, uncheck the Extend my Windows desktop onto this monitor option, and then click Apply. If necessary, press <Fn><F8> to bring the screen image back to the computer display.
1 Click the Windows Vista Start button , and click Control Panel. 2 Under Appearance and Personalization, click Adjust screen resolution. 3 In the Display Settings window, click the monitor 2 icon, click the Extend the desktop onto this monitor check box, and then click Apply. 4 Click OK to close the Display Settings window. To disable extended desktop mode: 1 In the Display Settings window, click the Settings tab. 2 Click the monitor 2 icon, uncheck the Extend the desktop onto this monitor option, and then click Apply.

S-Video and S/PDIF Digital Audio
S-video TV-out connector Using Multimedia

composite video adapter

composite video adapter S/PDIF digital audio cable 2 S-video cable
1 Turn off the computer and the TV and/or the audio device that you want to connect. 2 Connect the composite video adapter to the S-video TV-out connector on your computer. 3 Plug one end of the S-video cable into the S-video output connector on the composite video adapter.
4 Plug the other end of the S-video cable into the S-video input connector on the TV. 5 Plug one end of the S/PDIF digital audio cable into the digital audio connector on the composite video adapter cable.
S/PDIF digital audio cable
6 Plug the other end of the S/PDIF digital audio cable into the audio input connector on your TV or audio device. 7 Turn on the TV, turn on any audio device that you connected (if applicable), and then turn on the computer. 8 See "Enabling the Display Settings for a TV" on page 90 to ensure that the computer recognizes and works properly with the TV.
Composite Video and Standard Audio
audio input connector composite video adapter
composite video adapter standard audio cable

composite video cable

1 Turn off the computer and the TV and/or audio device that you want to connect. 2 Connect the composite video adapter to the S-video TV-out connector on your computer. 3 Plug one end of the composite video cable into the composite videooutput connector on the composite video adapter.
4 Plug the other end of the composite video cable into the composite videoinput connector on the TV.
5 Plug the single-connector end of the audio cable into the headphone connector on the computer. 6 Plug the two RCA connectors on the other end of the audio cable into the audio input connectors on your TV or other audio device. 7 Turn on the TV, turn on any audio device that you connected (if applicable), and then turn on the computer. 8 See "Enabling the Display Settings for a TV" on page 90 to ensure that the computer recognizes and works properly with the TV.
Composite Video and S/PDIF Digital Audio
1 Turn off the computer and the TV and/or audio device that you want to connect. 2 Connect the composite video adapter to the S-video TV-out connector on the computer. 3 Plug one end of the composite video cable into the composite video-input connector on the composite video adapter.

NOTE: To ensure that the display options appear correctly, connect the TV to the computer before you enable the display settings. 1 Click Start , click Control Panel, and then click Appearance and Personalization. 2 Under Personalization, click Adjust Screen Resolution. The Display Properties window appears. 3 Click Advanced. 4 Click the tab for your video card. NOTE: To determine the type of video card installed in your computer, see Help Windows Help and Support. To access Help and Support, click Start and Support. Under Pick a Task, click Use Tools to view your computer information and diagnose problems. Then, under My Computer Information, select Hardware. 5 In the display devices section, select the appropriate option for using either a single display or multiple displays, ensuring that the display settings are correct for your selection.
ExpressCards provide additional memory, wired and wireless communications, multimedia and security features. For example, you can add an ExpressCard to make wireless wide area network (WWAN) connectivity available on your computer. ExpressCards support two form factors: ExpressCard/34 (34 mm wide) ExpressCard/54 (54 mm wide in an L-shape with a 34-mm connector)
The 34-mm card fits into both the 34-mm and 54-mm card slots. The 54-mm card only fits into a 54-mm card slot. See "Specifications" on page 205 for information on supported ExpressCards. NOTE: An ExpressCard is not a bootable device.

ExpressCard/34

ExpressCard/54
Your computer shipped with a plastic blank installed in the ExpressCard slot. Blanks protect unused slots from dust and other particles. Save the blank for use when no ExpressCard is installed in the slot; blanks from other computers may not fit your computer.
Remove the blank before installing an ExpressCard. To remove the blank, see "Removing an ExpressCard or Blank" on page 93.
You can install an ExpressCard while the computer is running. The computer automatically detects the card. ExpressCards are generally marked with a symbol (such as a triangle or an arrow) or a label to indicate which end to insert into the slot. The cards are keyed to prevent incorrect insertion. If card orientation is not clear, see the documentation that came with the card. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. To install an ExpressCard: 1 Hold the card with the top side of the card facing up. 2 Slide the card into the slot until the card is completely seated in its connector. If you encounter too much resistance, do not force the card. Check the card orientation and try again.

ExpressCard

The computer recognizes the ExpressCard and automatically loads the appropriate device driver. If the configuration program tells you to load the manufacturer's drivers, use the media that came with the ExpressCard.
Removing an ExpressCard or Blank
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Press the release latch and remove the card or blank. For some release latches, you must press the latch twice, once to pop the latch out, and then a second time to pop the card out. Save a blank to use when no ExpressCard is installed in a slot. Blanks protect unused slots from dust and other particles.

release latch

NOTE: A memory card is not a bootable device. The 8-in-1 memory card reader reads the following memory cards: Secure Digital (SD) SDIO MultiMediaCard (MMC) Memory Stick Memory Stick PRO xD-Picture Card Hi Speed-SD Hi Density-SD
The memory card reader provides a fast and convenient way to view and share digital photos, music, and videos stored on a memory card.
Your computer shipped with a plastic blank installed in the 8-in-1 memory card reader. Blanks protect unused slots from dust and other particles. Save the blank for use when no memory card is installed in the slot; blanks from other computers may not fit your computer. Remove the blank before installing a memory card. To remove the blank, see "Removing a Memory Card or Blank" on page 96.
You can install a memory card in the computer while the computer is running. The computer automatically detects the card. Memory cards are generally marked with a symbol (such as a triangle or an arrow) or a label to indicate which end to insert into the slot. The cards are keyed to prevent incorrect insertion. If card orientation is not clear, see the documentation that came with the card.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. To install a memory card: 1 Hold the card with the top side of the card facing up. 2 Slide the card into the slot until the card is completely seated in its connector. If you encounter too much resistance, do not force the card. Check the card orientation and try again.
The computer recognizes the memory card and automatically loads the appropriate device driver. If the configuration program tells you to load the manufacturer's drivers, use the media that came with the memory card, if applicable.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: Use the memory card configuration utility (click the icon in the notification area) to select a card and stop it from functioning before you remove it from the computer. If you do not stop the card in the configuration utility, you could lose data. Press the card into the slot to release it from the card reader. When it is partially ejected, remove the card. 96

Setting Up and Using Networks
A computer network provides connectivity between your computer and the Internet, another computer, or a network. For example, with a network set up in a home or small office you can print to a shared printer, access drives and files on another computer, browse other networks, or access the Internet. You can set up a local area network (LAN) using a network or broadband modem cable or set up a wireless LAN (WLAN). The Microsoft Windows XP and Microsoft Windows Vista operating systems provide wizards to help guide you through the process of networking computers. For more information about Networking, see the Windows Help and Support Center (see "Microsoft Windows XP and Windows Vista Help and Support Center" on page 16).
Connecting a Network or Broadband Modem Cable
Before you connect your computer to a network, the computer must have a network adapter installed and a network cable connected to it. 1 Connect the network cable to the network adapter connector on the right side of your computer. NOTE: Insert the cable connector until it clicks into place, and then gently
pull on the cable to ensure that it is securely attached.
2 Connect the other end of the network cable to a network connection device or a network wall connector. NOTE: Do not use a network cable with a telephone wall connector.

Setting Up a Network

1 Click Start All Programs Accessories Communications Network Setup Wizard Next Checklist for creating a network. NOTE: Selecting the connection method labeled This computer connects
directly to the Internet enables the integrated firewall provided with Windows XP Service Pack 2 (SP2).
2 Complete the checklist. 3 Return to the Network Setup Wizard and follow the instructions in the wizard.
1 Click the Windows Vista Start button Set up a connection or network. , and then click Connect To
2 Select an option under Choose a connection option. 3 Click Next, and then follow the instructions in the wizard.
A wireless local area network (WLAN) is a series of interconnected computers that communicate with each other over the air waves rather than through a network cable connected to each computer. In a WLAN, a radio communications device called an access point or wireless router connects network computers and provides Internet, or network access. The access point or wireless router and the wireless network card in the computer communicate by broadcasting data from their antennas over the air waves.
What You Need to Establish a WLAN Connection

If the Pre-boot System Assessment completes successfully, you receive the message Booting Dell Diagnostic Utility Partition. Press any key to continue. 4 Press any key to start the Dell Diagnostics from the diagnostics utility partition on your hard drive.
Starting the Dell Diagnostics From the Drivers and Utilities Media
1 Insert your Drivers and Utilities media. 2 Shut down and restart the computer. When the DELL logo appears, press <F12> immediately. NOTE: 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. NOTE: The next steps change the boot sequence for one time only. On the
next start-up, the computer boots according to the devices specified in the system setup program. for extended periods of time. To avoid possible keyboard failure, press and release the <F12> key in even intervals until the boot device menu appears.
NOTE: Keyboard failure may result when a key on the keyboard is held down
3 At the boot device menu, use the up- and down-arrow keys to highlight CD/DVD/CD-RW, and then press <Enter>. NOTE: The Quickboot feature changes the boot sequence for the current
boot only. Upon restart, the computer boots according to the boot sequence specified in the system setup program.
4 Select the Boot from CD-ROM option from the menu that appears and then press <Enter>. 5 Type 1 to start the Drivers and Utilities menu and then press <Enter>. 6 Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer. 7 At the Dell Diagnostics Main Menu, select the test you want to run. NOTE: Write down any error codes and problem descriptions exactly as they
appear and follow the instructions on the screen.
8 After all tests have completed, close the test window to return to the Dell Diagnostics Main Menu. 9 Remove your Drivers and Utilities media and then close the Main Menu window to exit the Dell Diagnostics and restart the computer.
Dell Diagnostics Main Menu
After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the option you want. NOTE: It is recommended that you select Test System to run a complete test on your computer.

Starting System Restore

NOTICE: Before you restore the computer to an earlier operating state, save and close any open files and exit any open programs. Do not alter, open, or delete any files or programs until the system restoration is complete. 1 Click Start All Programs AccessoriesSystem Tools System Restore. 2 Click either Restore my computer to an earlier time or Create a restore point. 3 Click Next and follow the remaining prompts on the screen. In the event that System Restore did not resolve the issue, you may undo the last system restore.
NOTICE: Before you undo the last system restore, save and close all open files and exit any open programs. Do not alter, open, or delete any files or programs until the system restoration is complete. 1 Click Start All Programs Accessories System Tools System Restore. 2 Click Undo my last restoration and click Next. 156

Enabling System Restore

NOTE: If you reinstall Windows XP with less than 200 MB of free hard-disk space available, System Restore is automatically disabled. To see if System Restore is enabled: 1 Click Start Control Panel Performance and Maintenance System. 2 Click the System Restore tab and ensure that Turn off System Restore is unchecked.

Using Dell PC Restore

NOTICE: Using Dell PC Restore permanently deletes all data on the hard drive and removes any programs or drivers installed after you received your computer. If possible, back up the data before using these options. Use PC Restore only if System Restore did not resolve your operating system problem. NOTE: Dell PC Restore by Symantec may not be available in certain countries or on certain computers. Use Dell PC Restore only as the last method to restore your operating system. These options restore your hard drive to the operating state it was in when you purchased the computer. Any programs or files added since you received your computerincluding data filesare permanently deleted from the hard drive. Data files include documents, spreadsheets, e-mail messages, digital photos, music files, and so on. If possible, back up all data before using PC Restore. To use PC Restore: 1 Turn on the computer. During the boot process, a blue bar with www.dell.com appears at the top of the screen. 2 Immediately upon seeing the blue bar, press <Ctrl><F11>. If you do not press <Ctrl><F11> in time, let the computer finish booting (starting), and then restart the computer again. NOTICE: If you do not want to proceed with PC Restore, click Reboot. 3 Click Restore and click Confirm. The restore process takes approximately 6 to 10 minutes to complete.

Repair services are provided pursuant to the terms and conditions of your limited warranty and any optional support service contract purchased with the computer. All Dell-standard components included in a Custom Factory Integration (CFI) project are covered by the standard Dell limited warranty for your computer. However, Dell also extends a parts replacement program to cover all nonstandard, third-party hardware components integrated through CFI for the duration of the computers service contract.
Definition of "Dell-Installed" Software and Peripherals
Dell-installed software includes the operating system and some of the software programs that are installed on the computer during the manufacturing process (Microsoft Office, Norton Antivirus, etc). Dell-installed peripherals include any internal expansion cards, or Dell-branded module bay or ExpressCard accessories. In addition, any Dellbranded monitors, keyboards, mice, speakers, microphones for telephonic modems, docking stations/port replicators, networking products, and all associated cabling are included.
Definition of "Third-Party" Software and Peripherals
Third-party software and peripherals include any peripheral, accessory, or software program sold by Dell not under the Dell brand (printers, scanners, cameras, games, etc). Support for all third-party software and peripherals is provided by the original manufacturer of the product.

FCC Notice (U.S. Only)

FCC Class B
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturers instruction manual, may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation. NOTICE: The FCC regulations provide that changes or modifications not expressly approved by Dell Inc. could void your authority to operate this equipment. These limits are designed to provide reasonable protection against harmful interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference with radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures: Reorient the receiving antenna. Relocate the system with respect to the receiver. Move the system away from the receiver. Plug the system into a different outlet so that the system and the receiver are on different branch circuits.

battery life span The length of time (years) during which a portable computer battery is able to be depleted and recharged. battery operating time The length of time (minutes or hours) that a portable computer battery powers the computer. BD-R Blu-ray Disc recordable refers to two optical disc formats that can be recorded with an optical disc recorder. BD-R discs can be written to once. BD-RE Blu-ray Disc RE can be erased and re-recorded multiple times.
BIOS basic input/output system A program (or utility) that serves as an interface between the computer hardware and the operating system. Unless you understand what effect these settings have on the computer, do not change them. Also referred to as system setup. bit The smallest unit of data interpreted by your computer. Bluetooth wireless technology A wireless technology standard for short-range (9 m [29 feet]) networking devices that allows for enabled devices to automatically recognize each other. boot sequence Specifies the order of the devices from which the computer attempts to boot. bootable CD A CD that you can use to start your computer. In case your hard drive is damaged or your computer has a virus, ensure that you always have a bootable CD or floppy disk available. Your Drivers and Utilities media is a bootable CD. bootable disk A disk that you can use to start your computer. In case your hard drive is damaged or your computer has a virus, ensure that you always have a bootable CD or floppy disk available. bps bits per second The standard unit for measuring data transmission speed. BTU British thermal unit A measurement of heat output. bus A communication pathway between the components in your computer. bus speed The speed, given in MHz, that indicates how fast a bus can transfer information. byte The basic data unit used by your computer. A byte is usually equal to 8 bits.
C Celsius A temperature measurement scale where 0 is the freezing point and 100 is the boiling point of water. cache A special high-speed storage mechanism which can be either a reserved section of main memory or an independent high-speed storage device. The cache enhances the efficiency of many processor operations. L1 cache Primary cache stored inside the processor. L2 cache Secondary cache which can either be external to the processor or incorporated into the processor architecture. carnet An international customs document that facilitates temporary imports into foreign countries. Also known as a merchandise passport.
CD-R CD recordable A recordable version of a CD. Data can be recorded only once onto a CD-R. Once recorded, the data cannot be erased or written over. CD-RW CD rewritable A rewritable version of a CD. Data can be written to a CD-RW disc, and then erased and written over (rewritten). CD-RW drive A drive that can read CDs and write to CD-RW (rewritable CDs) and CD-R (recordable CDs) discs. You can write to CD-RW discs multiple times, but you can write to CD-R discs only once. CD-RW/DVD drive A drive, sometimes referred to as a combo drive, that can read CDs and DVDs and write to CD-RW (rewritable CDs) and CD-R (recordable CDs) discs. You can write to CD-RW discs multiple times, but you can write to CD-R discs only once. clock speed The speed, given in MHz, that indicates how fast computer components that are connected to the system bus operate. CMOS A type of electronic circuit. Computers use a small amount of batterypowered CMOS memory to hold date, time, and system setup options. COA Certificate of Authenticity The Windows alpha-numeric code located on a sticker on your computer. Also referred to as the Product Key or Product ID. Consumer IR A port that allows you to transfer data between the computer and infrared-compatible devices without using a cable connection. Control Panel A Windows utility that allows you to modify operating system and hardware settings, such as display settings. controller A chip that controls the transfer of data between the processor and memory or between the processor and devices. CRIMM continuity rambus in-line memory module A special module that has no memory chips and is used to fill unused RIMM slots. cursor The marker on a display or screen that shows where the next keyboard, touch pad, or mouse action will occur. It often is a blinking solid line, an underline character, or a small arrow.

IrDA Infrared Data Association The organization that creates international standards for infrared communications. IRQ interrupt request An electronic pathway assigned to a specific device so that the device can communicate with the processor. Each device connection must be assigned an IRQ. Although two devices can share the same IRQ assignment, you cannot operate both devices simultaneously. ISP Internet service provider A company that allows you to access its host server to connect directly to the Internet, send and receive e-mail, and access websites. The ISP typically provides you with a software package, user name, and access phone numbers for a fee.
Kb kilobit A unit of data that equals 1024 bits. A measurement of the capacity of memory integrated circuits. KB kilobyte A unit of data that equals 1024 bytes but is often referred to as 1000 bytes. key combination A command requiring you to press multiple keys at the same time. kHz kilohertz A measurement of frequency that equals 1000 Hz.
LAN local area network A computer network covering a small area. A LAN usually is confined to a building or a few nearby buildings. A LAN can be connected to another LAN over any distance through telephone lines and radio waves to form a wide area network (WAN). LCD liquid crystal display The technology used by portable computer and flatpanel displays. LED light-emitting diode An electronic component that emits light to indicate the status of the computer. local bus A data bus that provides a fast throughput for devices to the processor. LPT line print terminal The designation for a parallel connection to a printer or other parallel device.
Mb megabit A measurement of memory chip capacity that equals 1024 Kb. Mbps megabits per second One million bits per second. This measurement is typically used for transmission speeds for networks and modems. MB megabyte A measurement of data storage that equals 1,048,576 bytes. 1 MB equals 1024 KB. When used to refer to hard drive storage, the term is often rounded to 1,000,000 bytes. MB/sec megabytes per second One million bytes per second. This measurement is typically used for data transfer ratings. media bay A bay that supports devices such as optical drives, a second battery, or a Dell TravelLite module. memory A temporary data storage area inside your computer. Because the data in memory is not permanent, it is recommended that you frequently save your files while you are working on them, and always save your files before you shut down the computer. Your computer can contain several different forms of memory, such as RAM, ROM, and video memory. Frequently, the word memory is used as a synonym for RAM. memory address A specific location where data is temporarily stored in RAM. memory mapping The process by which the computer assigns memory addresses to physical locations at start-up. Devices and software can then identify information that the processor can access. memory module A small circuit board containing memory chips, which connects to the system board. MHz megahertz A measure of frequency that equals 1 million cycles per second. The speeds for computer processors, buses, and interfaces are often measured in MHz. Mini PCI A standard for integrated peripheral devices with an emphasis on communications such as modems and NICs. A Mini PCI card is a small external card that is functionally equivalent to a standard PCI expansion card. Mini-Card A small card designed for integrated peripherals, such as communication NICs. The Mini-Card is functionally equivalent to a standard PCI expansion card. Mobile Broadband network (also known as a WWAN) is a series of interconnected computers that communicate with each other through wireless cellular technology and provides Internet access in the same varied locations from which cellular telephone service is available. Your computer can maintain the Mobile Broadband network connection regardless of its physical location, as long as the computer remains in the service area of your cellular service provider. Glossary

ScanDisk A Microsoft utility that checks files, folders, and the hard disks surface for errors. ScanDisk often runs when you restart the computer after it has stopped responding. SCSI small computer system interface A high-speed interface used to connect devices to a computer, such as hard drives, CD drives, printers, and scanners. The SCSI can connect many devices using a single controller. Each device is accessed by an individual identification number on the SCSI controller bus. SDRAM synchronous dynamic random-access memory A type of DRAM that is synchronized with the optimal clock speed of the processor. serial connector An I/O port often used to connect devices such as a handheld digital device or digital camera to your computer. Service Tag A bar code label on your computer that identifies your computer when you access Dell Support at support.dell.com or when you call Dell for customer service or technical support. setup program A program that is used to install and configure hardware and software. The setup.exe or install.exe program comes with most Windows software packages. Setup program differs from system setup. shortcut An icon that provides quick access to frequently used programs, files, folders, and drives. When you place a shortcut on your Windows desktop and doubleclick the icon, you can open its corresponding folder or file without having to find it first. Shortcut icons do not change the location of files. If you delete a shortcut, the original file is not affected. Also, you can rename a shortcut icon. SIM Subscriber Identity Module A SIM card contains a microchip that encrypts voice and data transmissions. SIM cards can be used in phones or portable computers. smart card A card that is embedded with a processor and a memory chip. Smart cards can be used to authenticate a user on computers equipped for smart cards. S/PDIF Sony/Philips Digital Interface An audio transfer file format that allows the transfer of audio from one file to another without converting it to and from an analog format, which could degrade the quality of the file. standby mode A power management mode that shuts down all unnecessary computer operations to save energy. Strike Zone Reinforced area of the platform base that protects the hard drive by acting as a dampening device when a computer experiences resonating shock or is dropped (whether the computer is on or off). surge protectors Prevent voltage spikes, such as those that may occur during an electrical storm, from entering the computer through the electrical outlet. Surge protectors do not protect against lightning strikes or against brownouts, which occur when the voltage drops more than 20 percent below the normal AC-line voltage level. Glossary