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Dell 755 manual Mini Tower Computer Specifications

Models: 755

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Mini Tower Computer Specifications

Microprocessor

Microprocessor type	The following are supported:
	• Intel® Core™2
	• Intel vPro™
	• Intel Celeron®
Internal cache	L1: up to 128 KB;
	L2: up to 8 MB (depending on your processor)

Memory

Type	667-MHz or 800-MHz DDR2 SDRAM
Memory connectors	4
Memory modules supported	512-MB, 1-GB, or 2-GB non-ECC
Minimum memory	dual-channel: 1 GB
	single-channel: 512 MB
	NOTE: 512 MB is the minimum shipping configuration.
Maximum memory	64-bit operating system: 8 GB
	32-bit operating system: 4 GB
BIOS address	F0000h

Computer Information

Chipset	Intel Q35 Express Chipset w/ICH9DO
Data bus width	64 bits
Address bus width	32 bits
DMA channels	eight
Interrupt levels	24
BIOS chip (NVRAM)	32 Mb
NIC	integrated network interface with ASF 1.03 and 2.0 support as
	defined by DMTF
	Capable of 10/100/1000 communication
	iAMT 3.0

Mini Tower Specifications

Page 35

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Dell 755 manual Mini Tower Computer Specifications

Contents

W . d e l l . c o m s u p p o r t . d e l l . c o m Dell OptiPlex User’s GuideSeptember JN460 Contents DC Power Connectors P3, P5, P8, and P9 General Drive Installation GuidelinesConnecting and Disconnecting Drive Cables Desktop Computer 127 General Drive Installation Guidelines 127Connecting and Disconnecting Drive Cables 129 DC Power Connector P5 and P6 160 Contents166 Small Form Factor Computer Specifications 175163 About Your Small Form Factor Computer 165202 Connecting and Disconnecting Drive Cables 196197 199228 Ultra Small Form Factor Computer Specifications 241Connecting and Disconnecting Drive Cables 248 About Your Ultra Small Form Factor Computer 227258 Installing a Device When Your Computer Is Turned Off 255About Smart Cards and Fingerprint Readers 276 Contents 255278 Deleting or Changing an Existing System Password 278Deleting or Changing an Existing Administrator Password 280 277296 Configuring Power Management Settings 295294 295Mini-Tower, Desktop, and Small Form Factor Computers 317 Addressing Memory Configurations 314313 316329 Problems writing to an optical drive 333Mail, Modem, and Internet Problems 334 Troubleshooting Power Problems 339Windows Vista Dell Factory Image Restore 362 Using Microsoft Windows System Restore 359Undoing the Last System Restore 360 Using Dell PC Restore and Dell Factory Image Restore 361367 Returning Items for Warranty Repair or Credit 367365 366Support.dell.com How to set up my computerFinding Information Desktop System Software DSSDell Product Information Guide What Are You Looking For? Find It Here Warranty informationFor your configuration How to use Windows XP Order status, warranty, and repair informationUpdates Segment, and enter your Service TagSystem you ordered Not ship with your computerTurning Off Your Computer Before You BeginRecommended Tools Before Working Inside Your ComputerBefore You Begin Mini Tower Computer Mini Tower ComputerAbout Your Mini Tower Computer Front ViewNo light The computer is turned off Blinking green The computer is in a power-saving modePower problem may exist see Power Problems on 21 for more informationBack View Green a good connection exists between a 10-Mbps network Back Panel ConnectorsAddress. For more information, see System Setup Options on That came with your computer Removing the Computer CoverCap Security cable slot Cover release latch Padlock ring Inside Your Computer Chassis Intrusion SwitchReplacing the Chassis Intrusion Switch Removing the Chassis Intrusion SwitchResetting the Chassis Intrusion Detector System Board Components SATA3 Mini Tower Computer Mini Tower Computer Specifications Maximum PCI Express Connectors ConnectorsConnector size Connector data widthTwo Sata optical drives DrivesTwo Sata Serial ATA hard drives One3.5-inch floppy drive or media readerRating Voltage AC power source WattageControls and Lights Heat dissipationDepth WeightPhysical Height WidthMini Tower Specifications Cards Installing a PCI or PCI Express CardCards Cards Cards Cards Removing a PCI or PCI Express Card Card retention latch Alignment guide Card-edge connector Card connectorCard retention latch PS/2 Serial Port AdapterCard fully seated Card not fully seated Bracket within slot Cards Card retention latch Alignment guide Installing eSATA Cards Drives General Drive Installation GuidelinesSata Connector Power Cable ConnectorsHard Drive Data cable Hard drive system board Power cable Connector Hard drive Release tabs Snap the bracket onto the new drive Drives Drives Hard drive Hard drive bracket Pins Drives Floppy Drive Floppy drive Drive release latch Floppy drive Shoulder screws Shoulder screw slots Media Card Reader Media card reader Drive release latch Media card Shoulder screws Shoulder screw slots Reader Optical Drive Optical drive Drive release latch Optical drive Shoulder screws Shoulder screw slots Power cable Data cable Sata optical drive connector Processor ProcessorRemoving the Processor Installing the Processor Processor Processor Panel PanelRemoving the I/O Panel Replacing the I/O Panel Power Supply Power SupplyReplacing the Power Supply Release button Power supply Screws AC power connector DC Power Connector P1 DC Power ConnectorsPin Number Signal name AWG Wire Pin Number Signal Name DC Power Connector P2DC Power Connectors P3, P5, P8, and P9 DC Power Connector P10 DC Power Connector P7Speakers Installing a SpeakerSpeakers Removing a Speaker Desktop Computer Desktop ComputerAbout Your Desktop Computer Your Computer on page 21 for more informationPower Management for Windows XP and Windows Vista on Blinking or solid amber See Power Problems onPosition Removing the Computer Cover Inside Your Computer Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Removing the Heat Sink Assembly System Board Components Desktop Computer Desktop Computer Specifications Desktop Computer SpecificationsCard or a DVI graphics card for dual-monitor support PCI without riser-card cage ConnectorsMaximum PCI Express without riser-card Cage Connectors BoardMaximum Expansion Bus Connector sizeMaximum ESATA Desktop Computer Specifications Port adapter 100One3.5-inch floppy drive or media card reader One Sata optical drive101 Power source WattageRating Power Heat dissipation102 Expansion Cards PCI Cards103 Expansion Cards 105 Expansion Cards 107 Expansion Cards 109 Expansion Cards 111 112 113 Press in on the tab to raise the card-retention latch 114 115 PS/2 Serial Port Adapter 117 Expansion Cards 119 Riser-card cage Handle Riser cards 121 Expansion Cards 123 ESATAExpansion Cards 125 Replace the riser 127 128 129 Drive Inserts130 131 Drive release latch Optical drive 133 134 135 Drive insert Information Guide Drives 137Drive release latch Media card reader 139 Drive insert 141 Hard Drive 143 Hard drive Release tabs Plastic hard drive bracket 145 Drives 147 Data cable Hard drive system board Connector 149 Installing the Processor 151 Processor 153 Replacing the I/O Panel 155 Release button Power supply Screws AC power connector 157 158 Pin Signal name 18-AWG Number Wire159 160 DC Power Connector P3DC Power Connector P4 DC Power Connector P5 and P6161 162 163 164 Small Form Factor Computer Small Form Factor ComputerAbout Your Small Form Factor Computer 165166 167 Removing the Computer Cover 169 170 171 172 173 174 175 Small Form Factor Computer SpecificationsSmall Form Factor Computer Specifications 176 ConnectorMaximum PCI Express Connector Port adapter Video 177178 179 180 181 Expansion Cards 183 184 185 PCI Express and DVI Cards186 187 Expansion Cards 189 Expansion Cards 191 PS2/SERIAL2 193 Expansion Cards 195 General Installation GuidelinesSerial ATA Sata Connector 197 Securing tabs Hard drive 199 Release tabs Hard drive Hard drive bracket 201 Replacing a Hard Drive Fan 203 Optical Drive 205 Floppy Drive 207 Installing a Floppy Drive 209 Media card reader data cable 211 Replacing a Media Card ReaderDrives 213 Installing the Processor 215 Processor 217 Replacing the I/O Panel 219 Mounting screw 221 Pin Signal Name Number222 223 DC Power Connectors P3Pin Signal 18-AWG Number Name Wire 224 DC Power Connector P5DC Power Connector P6 225 226 3 4 Ultra Small Form Factor ComputerAbout Your Ultra Small Form Factor Computer 227Management for Windows XP and Windows Vista on Blinking or solid yellow See Power Problems onSide View 228229 Network controller is turned off in system setup 231 Connecting Two Monitors232 233 Removing the Chassis Intrusion Switch 235 236 237 Cable Cover OptionalInformation Guide Connecting the AC Power Adapter239 Dell Badge240 241 Ultra Small Form Factor Computer Specifications242 Ultra Small Form Factor Computer Specifications243 Physical AC power source244 245 246 247 Your computer supports One Sata serial ATA hard drive248 249 Drives 251 Drives 253 Drives Module Bay Installing a Device When Your Computer Is Turned OffModule Bay 255Bottom of computer Security screw 257 Latch release 259 Securing a Device in the Module Bay260 261 Top of heat sink Heat sink Retention base Release tab 263 Processor 265 266 267 Removing a Speaker Manageability Advanced FeaturesAdvanced Features LegacySelect Technology ControlAdvanced Functionality Error Message DescriptionActive Management Technology 270271 Alert Description Alert Standard FormatDell OpenManage Applications 273 Dell Client Manager DCMPadlock Ring and Security Cable Slot Option SettingsPhysical Security Chassis Intrusion Detection275 Enabling the TPM FeatureTrusted Platform Module TPM 276 Security Management SoftwareComputer Tracking Software About Smart Cards and Fingerprint Readers277 Password ProtectionSystem Password Type the password and press Enter 279 Administrator PasswordOverview System SetupDisabling a Forgotten Password and Setting a New Password Entering System Setup281 System Setup ScreensSystem Setup Options 282 Internal default283 No Boot settingPerformance 284Computrace server 285Event Log 286Suspend 287 Boot SequenceMemory Key Booting to a USB Device289 Jumper SettingsMini Tower and Desktop Small Form Factor Advanced Features Ultra Small Form Factor Computer Jumper Setting Description Clearing Forgotten Passwords291 Clearing Cmos SettingsOptions in Windows XP Power Management for Windows XP and Windows VistaHyperthreading and Multi-Core Technology 293 Options in Windows Vista 295 About RAID ConfigurationsSegment Hard drive Verifying That RAID Is WorkingRAID Level 297 RAID Level 1 ConfigurationConfiguring Your Computer for RAID Creating a RAID Level 1 Configuration Creating a RAID Level 0 Configuration299 Creating a RAID Level 1 Configuration 301 Migrating to a RAID Level 0 ConfigurationMigrating to a RAID Level 1 Configuration Advanced Features 303 BatteryReplacing the Battery BatteryBattery 305 306 Replacing the System Board Replacing the System Board307 308 Mini Tower System Board Screws309 Desktop System Board Screws310 Small Form Factor System Board Screws311 Ultra Small Form Factor System Board Screws312 313 MemoryDDR2 Memory Overview Installing Memory Addressing Memory ConfigurationsCrossbar Memory connector closest to Securing clips Processor315 Cutouts Memory moduleRemoving Memory 317 Replacing the Computer CoverMini-Tower, Desktop, and Small Form Factor Computers Ultra Small Form Factor Computers318 319 Installing Your Computer in an EnclosureInstalling Your Computer in an Enclosure 320 321 Installing Your Computer in an Enclosure Computer, Keyboard, and Monitor Cleaning Your ComputerCleaning a Non-Optical Mouse Cleaning an Optical MouseCDs and DVDs Floppy DriveMicrosoft Windows XP Microsoft Windows FeaturesMicrosoft Windows XP Features Transferring Information to a New ComputerMicrosoft Windows XP Features 327 Microsoft Windows VistaClick Finished and restart the new computer Network device Network adapter connector on computer Setting Up a Home and Office NetworkConnecting to a Network Adapter Network Setup329 330 Solving Problems TroubleshootingBattery Problems Card Problems332 Drive Problems333 Optical drive problemsProblems writing to an optical drive Hard drive problemsWindows XP Click Start→ All Programs→ Modem Helper Mail, Modem, and Internet Problems334 Click Properties→ Tools→ Check Now335 Lockups and Software Problems Keyboard ProblemsSolid blue screen appears Other software problemsProgram crashes repeatedly Program is designed for an earlier Windows operating system338 Memory ProblemsMouse Problems 339 Network ProblemsPower Problems Troubleshooting Power Problems340 Power Supply Self-Test341 Printer Problems342 Scanner ProblemsSound and Speaker Problems No sound from speakers343 Video and Monitor ProblemsNo sound from headphones Screen is blank Screen is difficult to read3D image quality is poor Power Lights345 Power Light Problem Description Suggested ResolutionSystem Lights 346 Power Light Problem Description347 Diagnostic LightsLight Pattern Problem Description 348 Light Pattern Problem Description Suggested Resolution349 Code Cause Beep Codes350 Message Possible Cause Corrective Action System Messages351 Message Possible Cause 352Product Information Guide Dell DiagnosticsWhen to Use the Dell Diagnostics 353Solving Problems Tab Function 355Option Function Identifying Drivers What Is a Driver?Drivers 357 Reinstalling Drivers and Utilities358 To start the Hardware Troubleshooter Using Microsoft Windows System RestoreYou can restore your operating system in the following ways Restoring Your Operating SystemStarting System Restore 361 Using Dell PC Restore and Dell Factory Image RestoreUsing PC Restore Image Restore Removing PC Restore363 Using the Operating System MediaClick Finish to reboot the computer Click Exit if the Install Windows message appearsSolving Problems 365 Online ServicesGetting Help Obtaining AssistanceSupport Service AutoTech ServiceAutomated Order-Status Service 367 Problems With Your OrderBefore You Call Guide 368369 Contacting Dell 371 WarrantyWarranty 372 FCC Notices US Only FCC Notices U.S. OnlyFCC Class B 373374 375 Glossary376 377 378 379 380 381 382 383 384 Video resolution See resolution385 386

Mini Tower Computer Specifications

Memory

Computer Information

NIC