Dell OptiPlex 745 User's Guide

Dell™OptiPlex™745SystemsUser'sGuide   Mini Tower Computer Desktop Computer Small Form Factor Computer Ultra Small Form Factor Comp

NOTE: Switching to performance mode may cause the drive to be noisier, but its performance is not affected. Changing the acoustics setting does not al

 11. Enter system setup (see Entering System Setup), and update the appropriate Primary Drive option (0 or 1).  12. Exit system setup, and rebo

 8. Attach the SATA connector removed in step5 to the first hard drive.  9. Locate an unused SATA connector on the system board and attach a d

 3. Select the drive-panel insert in front of the drive bay that you want to use.  4. Gently press the release tab of the insert to remove it f

Floppy Drive and Media Card Reader    Removing the Floppy Drive or Media Card Reader  1. Follow the procedures in Before You Begin.  2. Remo

 4. Attach the power and data cables to the floppy drive or Media Card Reader.  5. Replace the computer cover (see Replacing the Computer Cove

 2. Disconnect the power and data cables from the back of the drive.  3. Grasp the sliding plate lever and slide it towards the top of the comp

 6. Connect the power and data cables to the drive and to the system board.  7. Check all cable connections, and fold cables out of the way to

Back to Contents Page Dell™OptiPlex™745User'sGuide I/O Panel  Removing the I/O Panel    1. Follow the procedures in Before You Begin.

Back to Contents Page Dell™OptiPlex™745User'sGuide Power Supply Power Supply  Replacing the Power Supply   1. Follow the procedures

9. Reconnect the DC power cables to the power supply.  10. Connect the AC power cable to the AC power connector.  11. Replace the computer cov

 Boot Sequence This feature allows you to change the boot sequence for devices.  Option Settings l USB Device — The computer attempts to boot from

 DC Power Connector P2  DC Power Connectors P3, P5, P8, and P9  DC Power Connector P7  DC Power Connector P10 19 GND Black 20 NC NC 21 +5 VDC Red

Back to Contents Page   Pin Number  Signal name  18-AWG Wire 1 +12 VBDC White 2 GND Black 3 GND Black 4 +5 VDC Red

Back to Contents Page Dell™OptiPlex™745User'sGuide Removing the Computer Cover    1. Follow the procedures in Before You Begin.  2.

Back to Contents Page Dell™OptiPlex™745User'sGuide Mini Tower Computer Specifications Mini Tower Computer Specifications  Microproces

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed PCI Express x1: 5 Gbps

Back to Contents Page   Controls and Lights Power control push button Power light green light — blinking green indicates sleep mode; solid green ind

Back to Contents Page  Microsoft®Windows®XP Features Dell™OptiPlex™745User'sGuide Transferring Information to a New Computer User A

8. Click Finish. To transfer data to the new computer:  1. On the Now go to your old computer screen on the new computer, click Next.  2. On th

User Accounts and Fast User Switching  Adding User Accounts After the Microsoft Windows XP operating system is installed, the administrator or a u

 Network Setup Wizard The Microsoft® Windows® XP operating system provides a Network Setup Wizard to guide you through the process of sharing files

 2. Turn on (or restart) your computer.  3. When F2 = Setup, F12 = Boot Menu appears in the upper-right corner of the screen, press <F12>.

Back to Contents Page  Replacing the Computer Cover Dell™OptiPlex™745User'sGuide   1. Ensure that all cables are connected, and fold ca

Back to Contents Page  Expansion Cards Dell™OptiPlex™745User'sGuide Installing an Expansion Card Removing an Expansion Card  Your

 8. If applicable, before replacing the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the

 14. If you installed an network adapter card and want to turn off the integrated network adapter: a. Enter system setup, select Network Control

Back to Contents Page Dell™OptiPlex™745User'sGuide Processor Processor   Removing the Processor  1. Follow the procedures in Before

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in th

 12. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page  1 heat sink assembly 2 heat-sink assembly bracket 3 cap

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide Hard Drive Replacing a Hard-Drive Fan (Only Required for Certain Configura

 Power Cable Connectors  Connecting and Disconnecting Drive Cables When connecting and disconnecting a SATA data cable, hold the cable by the bl

Clearing Forgotten Passwords   Small Form Factor  Ultra Small Form Factor Computer  Jumper  Setting  Description PSWD Password features are

 7. Disconnect the power and data cable from the drive.  Installing a Hard Drive  1. Check the documentation for the drive to verify that it

 4. Connect the power and data cables to the drive.  5. Check all connectors to ensure that they are properly cabled and firmly seated.  6.

 15. Install your operating system on the hard drive. For instructions, see the documentation that came with your operating system. Replacing a

2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.  3. Pull up on the drive release latch and

2. Connect the data cable to the drive.  3. Gently position the drive until it clicks into place.  4. Check all cable connections, and fold

 4. If you are removing a floppy drive, pull up the cable release tab to unlock it.  5. Disconnect the data cable from the back of the floppy dri

3. If you are installing a floppy drive, insert the data cable into the cable release tab on the floppy drive and press down on the tab until it click

Back to Contents Page Dell™OptiPlex™745User'sGuide I/O Panel I/O Panel  Removing the I/O Panel    1. Follow the procedures in Befo

Replacing the I/O Panel  1. To replace the I/O panel, follow the removal procedures in the reverse order. Back to Contents Page  NOTE: Use the gu

Back to Contents Page Dell™OptiPlex™745User'sGuide Power Supply Power Supply  Replacing the Power Supply   1. Follow the procedures

 1. Follow the procedures in Before You Begin.  2. Locate the 2-pin password jumper (PSWD) on the system board, and remove the jumper to clear th

 DC Power Connectors  DC Power Connector P1  Pin Number  Signal name  18-AWG Wire 1 +3.3 VDC Orange 2 +3.3 VDC Orange 3 GND Black 4 +5 VDC Red

 DC Power Connector P2  DC Power Connectors P3  DC Power Connector P5 Back to Contents Page   Pin Number  Signal Name  18-AWG Wire 1 GND Black

Back to Contents Page Dell™OptiPlex™745User'sGuide Removing the Computer Cover Removing the Computer Cover    1. Follow the procedu

Back to Contents Page Dell™OptiPlex™745User'sGuide Small Form Factor Computer Specifications Small Form Factor Computer Specifications

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.0

Back to Contents Page  Power control push button Power light green light — blinking green indicates sleep mode; solid green indicates power-on state.

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicr

Back to Contents Page  Small Form Factor Computer Dell™OptiPlex™745User'sGuide About Your Small Form Factor Computer Inside Your Comp

 Back View  Back-Panel Connectors 10 3.5-inch drive bay Can contain an optional floppy drive or optional media card reader. 11 5.25-inch drive b

Inside Your Computer   indicates that the network cable has been securely attached.  NOTE: Do not plug a telephone cable into the network conne

Power Management Your computer can be set to use less power when you are not working. You control the power usage through the operating system insta

 System Board Components Back to Contents Page  1 drive-release latch 4 hard drive 2 optical drive 5 system board 3 power supply and fan 6 heat si

Back to Contents Page  Reinstalling Drivers and the Operating System Dell™OptiPlex™745User'sGuide Drivers Using Microsoft®Windows®X

 1. Click the Start button and click Control Panel.  2. Under Pick a Category, click Performance and Maintenance.  3. Click System.  4. I

Restoring the Computer to an Earlier Operating State  1. Click the Start button, point to All Programs® Accessories® System Tools, and then click Sys

If you are considering reinstalling the Windows XP operating system to correct a problem with a newly installed driver, first try using Windows XP Dev

 9. If the Modem Dialing Information screen appears, enter the requested information and click Next.  10. Enter the date, time, and time zone i

Back to Contents Page  Solving Problems Dell™OptiPlex™745User'sGuide Troubleshooting Tips Follow these tips when you troubleshoot your

Drive Problems   Fill out the Diagnostics Checklist as you complete these checks.  Optical drive problems  Testthegraphicscard—  1. Turn

 Problems writing to a CD/DVD-RW drive  Hard drive problems E-Mail, Modem, and Internet Problems   Keyboard Problems   Checkthespeakersa

Fan Problems   Lockups and Software Problems   The computer does not start up  The computer stops responding  A program stops responding Che

Back to Contents Page  Battery Dell™OptiPlex™745User'sGuide Replacing the Battery Replacing the Battery  A coin-cell battery mainta

 A program crashes repeatedly  A solid blue screen appears  Other software problems Media Card Reader Problems 1. Press <Ctrl><Shift>

Memory Problems Fill out the Diagnostics Checklist as you complete these checks.  Mouse Problems  media.  FlexBay device is Disabled — There

Network Problems Fill out the Diagnostics Checklist as you complete these checks.  Power Problems Fill out the Diagnostics Checklist as you compl

Printer Problems Fill out the Diagnostics Checklist as you complete these checks.  Restoring Default Settings The computer is receiving electric

Serial or Parallel Device Problems Fill out the Diagnostics Checklist as you complete these checks.  Sound and Speaker Problems Fill out the Diag

 No sound from headphones Video and Monitor Problems Fill out the Diagnostics Checklist as you complete these checks.   If the screen is blank On

 If the screen is difficult to read Back to Contents Page  Check the diagnostic lights — See Diagnostic Lights.  Checkthecardsetting— Enter sy

Back to Contents Page  Chassis Intrusion Switch Dell™OptiPlex™745User'sGuide Removing the Chassis Intrusion Switch Replacing the Chas

 Small Form Factor Computer  Ultra Small Form Factor Computer Replacing the Chassis Intrusion Switch

 1. Gently slide the chassis intrusion switch into its slot and reconnect the cable to the system board.  2. Replace the computer cover (see Repl

 5. Install the new system battery. a. Support the battery connector by pressing down firmly on the positive side of the connector. b. Hold t

Back to Contents Page  Replacing the System Board Dell™OptiPlex™745User'sGuide  Removing the System Board: Mini Tower, Desktop, Small Fo

 Small Form Factor System Board Screws  Ultra Small Form Factor System Board Screws 1 desktop system board 2 screws (10) 1 small form factor s

Place the system board assembly that you just removed next to the replacement system board to ensure it is identical.  Replacing the System Board:

Back to Contents Page Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferences

Back to Contents Page  Mini Tower Computer Dell™OptiPlex™745User'sGuide About Your Mini Tower Computer Inside Your Computer About

 Back View  Back-Panel Connectors l Blinking or solid amber — See Power Problems. To exit from a power-saving mode, press the power button or use

1 parallel connector Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connecto

Inside Your Computer    System Board Components CAUTION: Before you begin any of the procedures in this section, follow the safety instructi

Back to Contents Page  3 processor power connector (12VPOWER) 13 PCI Express x16 connector (SLOT1) 4 memory module connectors (DIMM_1, DIMM_2, DIMM_3

Back to Contents Page  Troubleshooting Tools and Utilities Dell™OptiPlex™745User'sGuide Dell Diagnostics System Lights Diagnostic

Back to Contents Page  Before You Begin Dell™OptiPlex™745User'sGuide Recommended Tools Turning Off Your Computer Before Working In

 5. Select the Boot from CD-ROM option from the menu that appears.  6. Type 1 to start the Drivers and Utilities CD menu.  7. Type 2 to star

Diagnostic Lights  To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "

 Beep Codes Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, calle

Error Messages Fill out the Diagnostics Checklist as you complete these checks.  If the message is not listed, see the documentation for the operat

Hard-diskconfigurationerror—   Hard-diskcontrollerfailure—   Hard-diskdrivefailure—   Hard-diskdrivefailure—  See Drive Pro

Resolving Software and Hardware Incompatibilities Operatingsystemnotfound— Contact Dell (see Contacting Dell).  PlugandPlayConfiguration

If a device is either not detected during the operating system setup or is detected but incorrectly configured, you can use Device Manager or the Hard

Back to Contents Page  Ultra Small Form Factor Computer Dell™OptiPlex™745User'sGuide About Your Ultra Small Form Factor Computer Insi

 Side View  Back View  Back-Panel Connectors 1 vents The vents located on each side of the computer help prevent your computer from overheati

 Connecting a VGA Monitor If you have a VGA monitor, plug the adapter cable into the white DVI display connector and connect the monitor cable to th

 3. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board. 

 System Board Components  Cable Cover (Optional)  Attaching the Cable Cover  1 fan shroud/ heat sink assembly 4 hard drive 2 speaker (optiona

 1. Ensure that all external device cables are threaded through the hole in the cable cover.  2. Connect all device cables to the connectors on t

 3. If your AC power cable has a green ground wire for connection to an electrical outlet, connect the metal ground connector to the grounding source

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Back to Contents Page Dell™OptiPlex™745User'sGuide Module Bay Module Bay  You can install a Dell™ portable device such as a floppy dr

 3. Press the device latch release so that the latch release pops out.  4. Pull the device by the latch release to remove the device from the

 1. If a device is installed in the module bay, double-click the Safely Remove Hardware icon on the taskbar.  2. Click the device you want to eje

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Back to Contents Page Dell™OptiPlex™745User'sGuide Processor Processor    1. Follow the procedures in Before You Begin.  2. Rem

c. Gently lift the heat sink from the processor. d. Lay the heat sink down on its top, with the thermal grease facing upward.  4. Pull the rele

Back to Contents Page  Advanced Features Dell™OptiPlex™745User'sGuide LegacySelect Technology Control LegacySelect technology control o

Back to Contents Page  Cleaning Your Computer Dell™OptiPlex™745User'sGuide Computer, Keyboard, and Monitor Mouse Floppy Drive C

If you are installing a processor replacement kit from Dell, return the processor to Dell in the same package in which your replacement kit was sent

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Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide Hard Drive Replacing a Hard-Drive Fan Your computer supports: l One SAT

 Connecting and Disconnecting Drive Cables When connecting and disconnecting a SATA data cable, hold the cable by the black connector at each end. W

 6. Remove the data and power cables from the drive connectors.  7. Remove the drive rails from the existing hard drive, and attach the drive r

 10. Replace the computer cover (see Replacing the Computer Cover).  11. Replace the cable cover, if used. See the documentation that came wi

 4. To replace the hard-drive fan: a. Align its four side tabs and release tab with the five corresponding slots in the hard-drive bracket. b.

Back to Contents Page Dell™OptiPlex™745User'sGuide Removing the Computer Cover Removing the Computer Cover   1. Follow the procedure

Back to Contents Page Dell™OptiPlex™745User'sGuide Ultra Small Form Factor Computer Specifications Ultra Small Form Factor Computer Spe

Drives Externally accessible one D-module bay for an optical drive, second hard drive, or floppy drive Internally accessible one bay for a 1-inch-hig

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

Back to Contents Page  computer is unplugged. Wattage 220W Heat dissipation 751BTU/hr NOTE: Heat dissipation is calculated based upon the power sup

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicr

Back to Contents Page  Warranty Dell™OptiPlex™745User'sGuide Dell Inc. ("Dell") manufactures its hardware products from parts a

Back to Contents Page  Desktop Computer Dell™OptiPlex™745User'sGuide About Your Desktop Computer Inside Your Computer About Your D

 Back View  Back-Panel Connectors 10 3.5-inch drive bay Can contain an optional floppy drive or optional Media Card Reader. 11 5.25-inch drive b

Inside Your Computer   indicates that the network cable has been securely attached.  NOTE: Do not plug a telephone cable into the network conne

 System Board Components Back to Contents Page  2 power supply 6 heat sink assembly 3 optional chassis-intrusion switch 7 front I/O panel 4 system

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicr

Back to Contents Page Dell™OptiPlex™745User'sGuide Expansion Cards Expansion Cards  YourDell™computersupportsaserialportadapte

 5. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the ca

 9. If you are installing a PCI Express card, release the lever on the securing tab, and ensure that the securing tab fits into the notch on the fr

l Access information about your computer, such as how many processors it has and what operating system it is running. l Monitor the status of your

 12. Connect any cables that should be attached to the card.  13. Replace the computer cover (see Replacing the Computer Cover), reconnect the

 3. If necessary, disconnect any cables connected to the card.  4. If you are removing a PCI Express x16 card, press the lever on the securing ta

b. Gently pull on the handle and lift the riser-card cage up and away from the computer.  4. If you are installing a new card, remove the fille

a. Align the tabs in the side of the riser-card cage with the slots on the side of the computer, and slide the riser-card cage down into place. b.

 3. Press in on the tab to raise the card-retention latch.  4. If necessary, disconnect any cables connected to the card.  5. Grasp the car

a. Enter system setup, select Network Controller, and change the setting to On (see Entering System Setup). b. Connect the network cable to the i

Back to Contents Page Dell™OptiPlex™745User'sGuide Processor Processor   Removing the Processor  1. Follow the procedures in Before

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in th

 12. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page  1 heat sink assembly 2 heat-sink assembly bracket 3 cap

l Off — No intrusion monitoring occurs and no messages appear.  Padlock Ring and Security Cable Slot Use one of the following methods to secure you

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide Optical Drive Floppy Drive and Media Card Reader Hard Drive Your comp

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the

 3. Disconnect the power and data cables from the back of the drive.  4. If you are not replacing the optical drive at this time, install the

 3. If you are replacing an existing drive: a. Remove the three shoulder screws from the existing drive. b. Insert the three shoulder screws

Floppy Drive and Media Card Reader    Removing a Floppy Drive or Media Card Reader  1. Follow the procedures in Before You Begin.  2. Remove

 Installing a Floppy Drive or Media Card Reader  1. If you are installing a new drive or media card reader: a. Use a small flat-edge screw driver

6. Replace the optical drive (see Optical Drive).  7. Check all cable connections, and fold cables out of the way to provide airflow for the fan a

 1. Check the documentation for the drive to verify that it is configured for your computer.  2. Unpack the replacement hard drive, and prepare it

 7. Replace the floppy drive and optical drive.  8. Check all connectors to be certain that they are properly cabled and firmly seated.  9. R

Back to Contents Page Dell™OptiPlex™745User'sGuide I/O Panel I/O Panel  Removing the I/O Panel    1. Follow the procedures in Bef

Computer Tracking Software Computer tracking software may enable you to locate your computer if it is lost or stolen. The software is optional and m

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Back to Contents Page Dell™OptiPlex™745User'sGuide Power Supply Power Supply  Replacing the Power Supply   1. Follow the procedures

 11. Replace the optical drive (see Optical Drive).  12. Connect the AC power cable to the connector.  13. Replace the computer cover (see R

 DC Power Connector P2  DC Power Connector P3   DC Power Connector P4  DC Power Connector P5 and P6 22 +5 VDC Red 23 +5 VDC Red 24 GND Black *Us

Back to Contents Page  Pin Number Signal name 18-AWG Wire 1 +3.3 VDC Orange 2 GND Black 3 +5 VDC Red 4 GND Black 5 +12 VDC Yellow

Back to Contents Page Dell™OptiPlex™745User'sGuide Removing the Computer Cover Removing the Computer Cover    1. Follow the procedu

Back to Contents Page Dell™OptiPlex™745User'sGuide Desktop Computer Specifications Desktop Computer Specifications  Microprocessor Mi

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.0

Audio two connectors for line-in/ microphone and line-out; two front-panel connectors for headphones and microphone System board connectors: SATA two

Back to Contents Page   Environmental Temperature: Operating 10°to35°C(50°to95°F) Storage –40°to65°C(–40°to149°F) Relative humidity 20% to

 5. To confirm your password, type it a second time and press <Enter>. The password setting changes to Set.  6. Exit system setup. Passwo

Back to Contents Page  FCC Notices (U.S. Only) Dell™OptiPlex™745User'sGuide  FCC Class B This equipment generates, uses, and can radiate

Back to Contents Page  Finding Information Dell™OptiPlex™745User'sGuide NOTE: Some features or media may be optional and may not ship wi

l Use the Service Tag to identify your computer when you use support.dell.com or contact support. l Enter the Express Service Code to direct your ca

Back to Contents Page  Your operating system product key label is located on your computer (see Service Tag and Microsoft® Windows® License).  NOTE:

Back to Contents Page  Getting Help Dell™OptiPlex™745User'sGuide Obtaining Assistance Problems With Your Order Product Information

[email protected] (Latin America and Caribbean countries only) [email protected] (Asian/Pacific countries only) support.jp.dell.com (Japan only

Returns that are missing any of the preceding requirements will be refused at Dell's receiving dock and returned to you. Before You Call Rememb

Country Code: 54 City Code: 11 E-mail: [email protected]   E-mail: [email protected]   E-mail for desktop and portable computers

Sales (Home Sales/Small Business) toll-free:1-800-387-5752 Sales (med./large bus., government) toll-free:1-800-387-5755 Spare Parts Sales & Exte

Country Code: 358 City Code: 9 Sales under 500 employees 0207533540 Fax 0207533530 Sales over 500 employees 0207533533 Fax 0207533530 France (

 1. Enter system setup (see Entering System Setup) and verify that Admin Password is set to Not Set.  2. Highlight Admin Password and press the l

Ireland (Cherrywood) International Access Code: 00 Country Code: 353 City Code: 1 Sales  Ireland Sales 012044444 Dell Outlet 1850200778 Online Or

Latin America Sales (Austin, Texas, U.S.A.) 512728-4397 SalesFax (Austin, Texas, U.S.A.) 512728-4600 or512728-3772 Luxembourg International Access

International Access Code: 011 Country Code: 48 City Code: 22 Customer Service Phone 5795700 Customer Care 5795999 Sales 5795999 Customer Se

International Access Code: 00 Country Code: 46 City Code: 8 Relational Customer Care 0859005642 Home/Small Business Customer Care 0858770527 Emp

Back to Contents Page  U.S.A. (Austin, Texas) International Access Code: 011 Country Code: 1 Employee Purchase Program (EPP) Customers toll-free:1-8

Back to Contents Page  Glossary Dell™OptiPlex™745User'sGuide A B C D E F G H I K L M N O P R S T U V W X Z Terms in this Glossary are pr

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 o

access to transfer data and often improves performance. EIDE — enhanced integrated device electronics — An improved version of the IDE interface for h

Hz — hertz — A unit of frequency measurement that equals 1 cycle per second. Computers and electronic devices are often measured in kilohertz (kHz), m

memory module — A small circuit board containing memory chips, which connects to the system board. MHz — megahertz — A measure of frequency that equal

 2. WhentheblueDELL™logoappears,press<F2>immediately. If you wait too long and the operating system logo appears, continue to wait u

R RAID — redundant array of independent disks — Amethodofprovidingdataredundancy.SomecommonimplementationsofRAIDincludeRAID0,RAID1,RA

S-video TV-out — A connector used to attach a TV or digital audio device to the computer. SXGA — super-extended graphics array — A video standard for

your favorite picture and make it wallpaper. WLAN — wireless local area network. A series of interconnected computers that communicate with each other

Back to Contents Page  Memory Dell™OptiPlex™745User'sGuide DDR2 Memory Overview Addressing Memory With 4-GB or Greater Configurations

Addressing Memory With 4-GB or Greater Configurations (32-bit Operating Systems Only) This computer supports a maximum of 8 GB of memory. Current

 4. Remove the memory module. If you are replacing a memory module, see Installing Memory.  5. If you are using a desktop computer, replace the o

5. Insert the module into the connector until the module snaps into position. If you insert the module correctly, the securing clips snap into the c

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicr

Back to Contents Page  Expansion Cards Dell™OptiPlex™745User'sGuide Installing an Expansion Card Removing an Expansion Card  Your

 3. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 5.  4. If you are replac

Onboard Devices Integrated NIC (On default) Enables or disables the integrated NIC controller. Settings are On, Off, On w/RPL, or On w/ PXE. When the

 10. Before you lower the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar.

 3. If necessary, disconnect any cables connected to the card.  4. Grasp the card by its top corners, and ease it out of its connector.  5.

 10. If you removed a sound card: a. Enter system setup, select Audio Controller, and change the setting to On (see System Setup). b. Connect

Back to Contents Page Dell™OptiPlex™745User'sGuide Processor Processor   Removing the Processor  1. Follow the procedures in Before

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in the

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide General Installation Guidelines Hard Drive Drive-Panel Inserts Flopp

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the

 5. Press in on the blue release tabs on each side of the drive and slide the drive up and out of the computer.  Installing a Hard Drive  1.

 4. Gently spread the sides of the drive bracket and slide the hard drive into the bracket until the drive clicks into place.  5. Carefully