Dell 720 User Manual

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Appendix

Dell™ XPS™ 720 Owner's Manual

Specifications

System Setup

Clearing Forgotten Passwords

Clearing CMOS Settings

Cleaning Your Computer

FCC Notices (U.S. Only)

Contacting Dell

Specifications

About Dell|How to Buy

Processor

Processor type Intel® Core™ 2 Duo (dual-core

Cache at least 1 MB

Memory

Type 800, and 667-MHz DDR2 unbuffered

Memory connectors four

Memory capacities 512 MB, 1 GB, or 2 GB non-ECC

Minimum memory 1 GB

Maximum memory 8 GB

Computer Information

Chipset

Northbridge

Southbridge

DMA channels five

Interrupt levels 24

BIOS chip (NVRAM) 4 Mb

NIC integrated network interface capable of

processor)

Intel® Core™ 2 Extreme (dual-core processor)

Intel® Core™ 2 Extreme (quad-core processor)

SDRAM; SLI memory

NOTE: See Addressing Memory

Configurations to verify the amount of

memory available to the operating system.

NVIDIA nForce 680i SLI

C55XE

MCP55PXE

10/100/1000 communication

Video

Type PCI Express

Audio

Type HDA 7.1 channel

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Expansion Bus

Bus type PCI Express x1 and x16

PCI 32-bit

PCI (SLOT3, SLOT5, SLOT6)

Connector three

Connector size 124 pins

Connector data width (maximum)

Bus speed 33 MHz

PCI Express (SLOT1) NOTE: If a graphics card is installed in

Connector one x1

Connector size 36 pins

Connector data width (maximum)

Bus throughput x1 slot bidirectional speed — 2.5 Gbps

PCI Express (SLOT7)

Connector one x16

Connector size 164 pins

Connector data width (maximum)

Bus throughput x16 slot bidirectional speed — 20 Gbps

PCI Express (SLOT2, SLOT4)

Connector two x16

Connector size 164 pins

Connector data width (maximum)

Bus throughput x16 slot bidirectional speed — 40 Gbps

32 bits

each of the PCI Express x16 card slots in the dual-graphics configuration, the PCI Express x1 card slot is not accessible for use.

1 PCI Express lane

8 PCI Express lanes

16 PCI Express lanes

Drives

Available devices Serial ATA drive, floppy drive,

Externally accessible: two 3.5-inch drive bays

Internally accessible: four 3.5-inch drive bays for hard drives

Connectors

External connectors:

IEEE 1394 front and back-panel 6-pin serial

Network adapter RJ45 connector

PS/2 (keyboard and mouse) two 6-pin mini-DIN

USB two front-panel, six back-panel, and

System board connectors:

IDE drive one 40-pin connector

Serial ATA six 7-pin connectors

Floppy drive 34-pin connector

Fan three 5-pin connectors

Liquid cooling (optional) one 12-pin connector

PCI three 124-pin connectors

PCI Express x1 36-pin connector

PCI Express x16 (SLOT7); card length up to 17.8 cm (7 inches only)

PCI Express x16 three 164-pin connectors

memory devices, Blu-ray™ Disc drive, DVD drive, DVD-RW drive, CD-RW/DVD combo drive, and media card reader

four 5.25-inch drive bays

connectors

two internal USB 2.0–compliant connectors

164-pin connector

Controls and Lights

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Power control push button

Power light green light — Blinking green in sleep

Hard-drive access light green

Network activity light (front panel) solid green indicates network

Link integrity light (on integrated network adapter)

Activity light (on integrated network adapter)

Diagnostic lights four lights on the front panel (see

Standby power light AUXPWR on the system board

Front panel LEDs eight multi-colored LEDs provide

Back panel LEDs two multi-colored lights provide

state; solid green for power-on state.

amber light — Blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem.

connection

green light — A good connection exists between a 10-Mbps network and the computer.

orange light — A good connection exists between a 100-Mbps network and the computer.

yellow light — A good connection exists between a 1-GB (1000-Mbps) network and the computer.

off (no light) — The computer is not detecting a physical connection to the network.

yellow blinking light when there is activity on the network; if there is not any network activity, the light will be off

Diagnostic Lights)

illumination for the front of the computer

NOTE: The color of the front panel

LEDs can be adjusted in system setup (see System Setup).

illumination for the I/O panel on the back of the computer

NOTE: The color of the back panel

LEDs can be adjusted in system setup (see System Setup).

Power

DC power supply: CAUTION: To reduce the risk of fire,

Wattage 750 W or

Voltage (see the safety instructions located in the Product Information Guide)

Backup battery 3-V CR2032 lithium coin cell

Physical

Height

Without stand 55.5 cm (21.9 inches)

With stand 57.2 cm (22.5 inches)

Width

Without stand 21.9 cm (8.6 inches)

With stand 35.6 cm (14.0 inches)

Depth 59.4 cm (23.4 inches)

Weight

Typical configuration 21.7 kg (47.8 lb)

Maximum configuration 25.6 kg (56.4 lb)

electric shock, or injury, do not overload an electrical outlet, power strip, or convenience receptacle. The total ampere rating of all products plugged into an electrical outlet, power strip, or other receptacle should not exceed 80 percent of the branch circuit rating.

1 KW

auto-sensing power supply—90 V to 265 V at 50/60 Hz

Environmental

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Temperature:

Operating 10° to 35°C (50° to 95°F)

Storage –40° to 65°C (–40° to 149°F)

Relative humidity 20% to 80% (noncondensing)

Maximum vibration:

Operating 0.25 G at 3 to 200 Hz at 0.5 octave/min

Storage 0.5 G at 3 to 200 Hz at 1 octave/min

Maximum shock:

Operating bottom half-sine pulse with a change in

Storage 27-G faired square wave with a velocity

Altitude:

Operating –15.2 to 3048 m (–50 to 10,000 ft)

Storage –15.2 to 10,668 m (–50 to 35,000 ft)

velocity of 20 inches/sec (50.8 cm/sec)

change of 200 inches/sec (508 cm/sec)

System Setup

Overview

Use system setup as follows:



To change the system configuration information after you add, change, or remove any hardware in your computer



To set or change a user-selectable option such as the user password



To read the current amount of memory or set the type of hard drive installed

Before you use system setup, it is recommended that you write down the system setup screen information for future reference.

NOTICE: Do not change the settings in system setup unless you are an expert computer user. Certain changes

can cause your computer to work incorrectly.

Entering System Setup

1. Turn on (or restart) your computer.

2. When the DELL logo appears, press <F2> immediately.

NOTE: Keyboard failure may result when a key on the keyboard is held down for extended periods of time. To

avoid possible keyboard failure, press and release <F2> in even intervals until the system setup screen appears.

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.

System Setup Screens

The system setup screen displays current or changeable configuration information for your computer. Information on the screen is divided into three areas: the options list, the active options field, and key functions.

Options List — This field appears on the left side of the system setup window. The field is a scrollable list containing features that define the configuration of your computer, including installed hardware, power conservation, and security features.

Scroll up and down the list with the upand down-arrow keys. As an option is highlighted, the Options Field displays more information about that option and the option's current and available settings.

Options Field — This field appears on the right side of the system setup window and contains information about each option listed in the Options List. In this field you can view information about your computer and make changes to your current settings.

Press the left- and right-arrow keys to highlight an option. Press <Enter> to make that selection active and return to the Options List.

NOTE: Not all settings listed in the

Options Field are changeable.

Key Functions — This field appears below the Options Field and lists keys and their functions within the active system setup field.

System Setup Options

NOTE: Depending on your computer and installed devices, the items listed in this section may not appear, or

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may not appear exactly as listed.

System

System Info Lists system information, such as the

Processor Info Identifies the processor type, clock

Memory Info Identifies the memory type, speed, and

PCI Info Indicates the expansion card type by

Date/Time Displays current date and time settings.

Boot Sequence The computer attempts to boot from

computer name, the BIOS version number and date, the system service tag, express service code and asset tag, and other system-specific information.

speed, bus speed, L2 cache, L3 cache, ID, and whether the processor is multiple core capable, supports HyperThreading and supports 64-bit technology.

channel mode (dual or single) by DIMM slot location.

slot location.

the sequence of devices specified in this list.

NOTE: If you insert a boot device and

restart the computer, this option appears in the system setup menu. To boot from a USB memory device, for example, select the USB device and move it so that it becomes the first device in the boot sequence.

Drives

Diskette Drive

(Internal default)

SATA Drives 0 through 5

(On default)

PATA Drives 0 through 1

(On default)

SMART Reporting

(Off default)

Enables and disables the floppy drive attached to the DSKT connector on the system board and sets read permissions for the drive.



Off — All floppy drives are disabled.



USB — USB floppy drives are enabled



Internal — The integrated floppy drive is enabled.



Read Only — The integrated floppy drive is enabled with readonly access.

NOTE: Operating systems with USB

support will recognize USB floppy drives regardless of this setting.

Enables or disables drives attached to the SATA connectors on the system board.



Off — A device attached to the interface is not usable.



On — A device attached to the interface is usable.



RAID On - A device attached to the interface is configured for RAID (see About Your RAID

Configuration).

Enables or disables drives attached to the ATA connectors on the system board, and lists the controller details.



Off — A device attached to the interface is not usable.



On — A device attached to the interface is usable.

Determines whether hard-drive errors for internal drives are reported during system startup.



Off — Errors are not reported.



On — Errors are reported.

Onboard Devices

Integrated NIC

(On default)

Enables or disables the integrated network interface controller (NIC).



Off — The integrated NIC is disabled.

Integrated Audio

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(On default)

USB Controller

(On default)

1394 Controller

(On default)

PS/2 Mouse Port

(On default)



On — The integrated NIC is enabled.



On w/PXE — The integrated NIC is on (with PXE enabled).

NOTE: PXE is required only if you are

booting to an operating system located on another computer. If a boot routine is not available from the remote system, the computer attempts to boot from the next device listed in the boot sequence.

Enables or disables the onboard audio controller.



Off — Integrated audio is disabled.



On — Integrated audio is enabled.

Enables or disables the internal USB controller.



Off — The USB controller is disabled.



On — The USB controller is enabled.



No Boot — The USB controller is enabled; however, the BIOS will not recognize USB storage devices.

NOTE: Operating systems with USB

support will recognize USB storage devices regardless of the No Boot setting.

Enables or disables the integrated IEEE 1394 controller.



Off — The 1394 controller is disabled.



On — The 1394 controller is enabled.

Enables or disables the onboard PS/2compatible mouse controller.



Off — The PS/2 legacy mouse port is disabled.



On — The PS/2 legacy mouse port is enabled.

LED Control

Front Upper LED

Front Lower LED

Rear Panel LED

LED Intensity

Performance

Multiple CPU Core

(On default)

Advanced Displays processor type and current

Adjusts the color of the upper front panel LEDs (see Front and Back View of

the Computer).

Adjusts the color of the lower front panel LEDs (see Front and Back View of

the Computer).

Adjusts the color of the rear panel LEDs (see Front and Back View of the Computer).

Adjusts the intensity for the color of the upper and lower front panel LEDs and the rear panel LEDs.

Specifies whether the processor has more than one core enabled.



Off — Multiple CPU core technology is disabled.



On — Multiple CPU core technology is enabled.

NOTE: The performance of some

applications may improve with an additional core enabled.

BIOS settings for processor clock speed, processor multiplier, front side bus (FSB) clock, and CPU core voltage. These settings may have been set by performance tuning applications or may change depending on settings in performance applications that you have installed.

SpeedStep

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(Off default)

Virtualization

(Off default)

HDD Acoustic Mode

(Bypass default)

For systems with Intel Extreme processors, the following fields are adjustable through the BIOS:



Processor Clock Speed: Adjusts the multiplier of the processor. For processors that cannot be overclocked, this field reports the current settings and cannot be changed.



Performance Application Support: Enables software applications to display and modify key system parameters to tune system performance. These applications are not installed or supported by Dell. The default is Off.

NOTE: To enable overclocking of other

system components, you first need to enable the Performance Application Support option in BIOS and then download an application like NVIDIA nTune version 5.0 or higher.

NOTE: Pressing <Alt><F> returns your

system to the factory defaults including RAID settings.

Specifies whether Enhanced Intel SpeedStep® technology is enabled for all supported processors in the system.



Off — Disable Enhanced SpeedStep technology



On — Enable Enhanced SpeedStep technology

Specifies whether a virtual machine monitor (VMM) can utilize the additional hardware capabilities provided by Intel Virtualization Technology



Off — Disable Virtualization Technology



On — Enable Virtualization Technology

Determines the acoustic mode at which the hard drive operates.



Bypass — Do nothing (needed for older drives).



Quiet — The hard drive operates at a slower, but quieter speed.



Suggested — Allow the hard drive manufacturer to select the mode.



Performance — The hard drive operates at a faster, but possibly noisier speed.

NOTE: Switching to performance mode

may cause an increase in noise produced by the drive, but does not affect the drive's performance.

NOTE: Changing the acoustics setting

does not alter your hard drive image.

Security

Admin Password

(Not Set default)

System Password

(Not Set default)

Password Changes

(Unlocked default)

Execute Disable

(On default)

Used to prohibit an unauthorized user from changing any configuration settings in the system setup.

Used to prohibit an unauthorized user from booting to the operating system.

This option locks the system password field with the administrator (admin) password.

NOTE: When the system password field

is locked, you can no longer disable password security by pressing <Ctrl><Enter> when the computer starts.

Enables or disables Execute Disable Memory Protection technology.



Off — Execute Disable Memory

Protection technology is disabled.

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

On — Execute Disable Memory Protection technology is enabled.

Power Management

AC Recovery

(Off default)

Auto Power On

(Off default)

Auto Power Time Specifies the time to automatically turn

Low Power Mode

(Off default)

Suspend Mode

(S3 default)

Specifies how the computer will behave when AC power is restored after an AC power loss.



Off — The system stays off after AC power is restored.



On — The system powers on after AC power is restored.



Last — The system returns to the previous state after AC power is restored.

Disables or selects when to automatically turn on the computer.



Off — Do not use the Auto Power Time.



Everyday — Turn the computer on every day at the time set in Auto Power Time.



Weekdays — Turn the computer on Monday through Friday at the time set in Auto Power Time.

NOTE: This feature does not work if

you turn off your computer using a power strip or surge protector.

on the computer.

Change the time to automatically turn on the computer by pressing the up- or down-arrow key to increase or decrease the numbers, or type the numbers in the appropriate time field.

NOTE: This feature does not work if

you turn off your computer using a power strip or surge protector.

Specifies how aggressive the system is at conserving power while in hibernate mode or turned off.



Off — Add more functionality.



On — Conserve more power.

Specifies the power management suspend mode.



S1 — The computer resumes more quickly from sleep mode.



S3 — The computer conserves more power when not in use (system memory remains active).

Maintenance

Service Tag Displays the system service tag.

SERR Message

(On default)

Load Defaults This setting restores the computer's

Event Log Displays the system event log.

Controls the SERR message mechanism. Some graphics cards require that the SERR Message mechanism be disabled.



Off — Do not use the SERR message mechanism.



On — Use the SERR message mechanism.

factory-installed default settings.



Cancel — Do not restore factoryinstalled default settings.



Continue — Restore factoryinstalled default settings.



Mark all entries — Mark all event log entries as read (R).



Clear log — Clear all event log entries.

NOTE: Once an event log entry is

marked as read (R) that entry cannot

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