Dell E2221HN User Manual

Dell E2221HN/E2421HN

User’s Guide

Monitor model: E2221HN/E2421HN
Regulatory model: E2221HNf, E2421HNf

Notes, Cautions and Warnings

NOTE: A NOTE indicates important information that helps you make better

use of your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of

data if instructions are not followed.

WARNING: A WARNING indicates a potential for property damage, personal

injury, or death.

Copyright © 2020 Dell Inc. or its subsidiaries. All rights reserved.

Dell, EMC, and other trademarks are of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of
their respective owners.

2020 - 09

Rev. A00

Contents

About your monitor ...........................................5

Package contents ..................................................... 5

Product features ....................................................... 6

Identifying features and controls ................................ 7

Monitor specifications ............................................... 9

Plug and play capability .............................................15

LCD monitor quality and pixel policy ...........................15

Maintenance guidelines .............................................15

Setting up the monitor .....................................16

Connecting the stand ...............................................16

Connecting your monitor ...........................................18

Organizing cables .....................................................18

Removing the stand ..................................................19

Operating your monitor ....................................22

Turning on the monitor ............................................. 22

Using the front panel controls ................................... 22

Using the On-Screen Display (OSD) menu .................. 24

Setting up your monitor ........................................... 36

Using tilt ................................................................. 38

Contents │ 3

Troubleshooting ...............................................39

Self-test ................................................................. 39

Built-in diagnostics .................................................. 40

Common problems ....................................................41

Product-specific problems ........................................ 43

Appendix .........................................................44

FCC Notices (U.S. Only) and Other Regulatory

Information ............................................................. 44

Contact Dell ............................................................ 44

Pin assignments ...................................................... 45

4 │ Contents

About your monitor

Package contents

Your monitor ships with the components indicated in the table. Ensure that you have received

all the components and see Contact Dell if anything is missing.

NOTE: Some items may be optional and may not ship with your monitor.

Some features may not be available in certain countries.

NOTE: To set up Stand from any other source, refer to the documentation

comes with the Stand for instruction.

Component image Component description

Display

Stand riser

Stand base

VESA™ Screw Cover

Power cable (varies by country)

About your monitor │ 5

Component image Component description

VGA cable
(EMEA and Japan region)

HDMI cable

• Quick Setup Guide

• Safety, Environmental, and

Regulatory Information

Product features

The Dell E2221HN/E2421HN flat panel monitor has an active matrix, Thin-Film Transistor
(TFT), Liquid Crystal Display (LCD) Panel with LED backlight. The monitor features
include :

• E2221HN: 54.68 cm (21.5 in.) diagonal viewable area display (measured diagonally).
1920 x 1080 resolution, with full-screen support for lower resolutions.

• E2421HN: 60.47 cm (23.8 in.) diagonal viewable area display (measured diagonally).
1920 x 1080 resolution, with full-screen support for lower resolutions.

• E2221HN: Viewing angles of 170 degrees in vertical and 160 degrees in horizontal
directions.

• E2421HN: Wide viewing angles of 178 degrees in vertical and horizontal directions.

• Dynamic contrast ratio (1,000:1).

• Digital connectivity with HDMI.

• Plug and play capable if supported by your computer.

• On-Screen Display (OSD) adjustments for easy setup and screen optimization.

• 0.3 W standby power when in the sleep mode.

• Optimize eye comfort with a flicker-free screen.

• Possible long-term effects if blue light emission from the monitor may cause damage

to the eyes, including eye fatigue or digital eye strain. ComfortView feature to reduce
risk of eye strain from high blue light emission.

• Security-lock slot.

• Arsenic-free glass and Mercury-free for panel only.

• BFR/PVC-Reduced (Its circuit boards are made from BFR/PVC-free laminates).

• Meets NFPA 99 leakage current requirement.

• TCO-certified display.

• EPEAT registered where applicable. EPEAT registration varies by country. See

www.epeat.net for registration status by country.

• RoHS Compliant.

• Energy Star® Certified.

6 │ About your monitor

Identifying features and controls

Front view

Label Description Use

To access the OSD menu and change the

1 Function buttons

2

Back view

Power On/Off button
(with LED indicator)

settings if required. (For more information,
see Using the front panel controls)

To turn the monitor On or Off.

1 2

1 32

Without monitor stand

4

With monitor stand

Label Description Use

1 Security-lock slot

Barcode, serial number,

2

and service tag label

3 Regulatory information List the regulatory approvals.

4 Cable-management slot To organize the cables.

5 Stand release button Release stand from monitor.

To secure the monitor using a security lock
(purchased separately).

See this label if you need to contact Dell
for technical support. The Service Tag is a
enables Dell service technicians to identify
the hardware components in your computer
and access warranty information.

About your monitor │ 7

5

Side view

Bottom view, without monitor stand

1 32

Label Description Use

1 Power port To connect the monitor power cable.

2 HDMI port

3 VGA port

For connection to your computer using
HDMI cable.

For connection to your computer using
VGA cable.

8 │ About your monitor

Monitor specifications

Model E2221HN E2421HN

Screen type Active matrix-TFT LCD Active matrix-TFT LCD
Panel type TN In-Plane Switching
Viewable area
Diagonal 546.86 mm (21.5 in.)
Active area

Horizontal
Vertical
Area
Pixel pitch 0.2482 mm x 0.2482 mm 0.2745 mm x 0.2745 mm

Pixel per inch (PPI) 102 92
Viewing angle

Horizontal
Vertical
Brightness 250 cd/m² (typical) 250 cd/m² (typical)

Contrast ratio 1,000 to 1 (typical) 1,000 to 1 (typical)
Faceplate coating Anti-glare with 3H hardness Anti-glare with 3H hardness
Backlight LED light bar system LED light bar system
Response time

Normal mode
Fast mode
Color depth 16.7 million colors 16.7 million colors

Color gamut
Dell display manager

compatibility
Connectivity 1 x HDMI 1.4, 1 x VGA 1 x HDMI 1.4, 1 x VGA

Bezel width (edge of
monitor to active area)

Security Security-lock slot for cable

Tilt angle -5° to 21° -5° to 21°

476.64 mm (18.77 in.)

268.11 mm (10.56 in.)

1277.92 cm² (198.21 in.²)

170° (typical)
160° (typical)

5 ms

-

72% (CIE1931)/83% (CIE1976) 72% (CIE1931)/83% (CIE1976)
Yes Ye s

17.8 mm (Top)

17.8 mm (Left/Right)

17.8 mm (Bottom)

lock (optional purchase)

604.70 mm (23.8 in.)

527.04 mm (20.75 in.)

296.46 mm (11.67 in.)

1562.46 cm² (242.15in.²)

178° (typical)
178° (typical)

8 ms
5 ms

11.8 mm (Top)

11.8 mm (Left/Right)

18.2 mm (Bottom)
Security-lock slot for cable
lock (optional purchase)

About your monitor │ 9

Resolution specifications

Model E2221HN E2421HN

Horizontal scan range
Vertical scan range 56 Hz to 76 Hz (automatic) 56 Hz to 76 Hz (automatic)
Maximum preset resolution 1920 x 1080 @ 60 Hz 1920 x 1080 @ 60 Hz

30 kHz to 83 kHz (automatic) 30 kHz to 83 kHz (automatic)

Preset display modes

Display Mode Horizontal

Frequency

(kHz)

VESA, 720 x 400 31.5 70.1 28.3 -/+
VESA, 640 x 480 31.5 60.0 25.2 - /-

VESA, 640 x 480 37. 5 75.0 31.5 - /­VESA, 800 x 600 37.9 60.3 40.0 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+

VESA, 1024 x 768 48.4 60.0 65.0 -/­VESA, 1024 x 768 60.0 75.0 78.8 +/+
VESA, 1152 x 864 67.5 75.0 108.0 +/+
VESA, 1280 x1024 64.0 60.0 108.0 +/+
VESA, 1280 x1024 80.0 75.0 135.0 +/+
VESA, 1600 x 900 60.0 60.0 108.0 + /+

VESA, 1920 x1080 67.5 60.0 148.5 + /+

Vertical

Frequency

(Hz)

Pixel Clock

(MHz)

Sync Polarity

(Horizontal /Vertical)

Electrical specifications

Model E2221HN

Video input signals • Analog RGB: 0.7 V ± 5 %, 75 Ω input impedance

• HDMI 1.4 (HDCP 1.2), 600 mV for each differential line,

100 Ω input impedance per differential pair
Synchronization
input signals

AC input voltage/
frequency/current

Inrush current 30 A (120 V AC Input)

Separate horizontal and vertical synchronizations,
polarity-free TTL level, SOG (Composite SYNC on green)

100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 0.7 A

60 A (240 V AC Input)

Model E2421HN

Video input signals • Analog RGB: 0.7 V ± 5 %, 75 Ω input impedance

• HDMI 1.4 (HDCP 1.2), 600 mV for each differential line,

100 Ω input impedance per differential pair
Synchronization
input signals

AC input voltage/
frequency/current

Inrush current 30 A (120 V AC Input)

Separate horizontal and vertical synchronizations,
polarity-free TTL level, SOG (Composite SYNC on green)

100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 0.8 A

60 A (240 V AC Input)

10 │ About your monitor

Physical characteristics

Model E2221HN/E2421HN

Signal cable type
Analog
Digital

NOTE: Dell monitors are designed to work optimally with the video cables that are shipped

with your monitor. As Dell does not have control over the different cable suppliers in the
market, the type of material, connector and process used to manufacture these cables, Dell
does not guarantee video performance on cables that are not shipped with your Dell monitor.

Dimensions
(with stand)

Height 397.30 mm (15.64 in.) 419.70 mm (16.52 in.)

Width 512.20 mm (20.17 in.) 550.60 mm (21.68 in.)

Depth 171.00 mm (6.73 in.) 171.00 mm (6.73 in.)

Dimensions
(without stand)

Height 303.70 mm (11.96 in.) 326.50 mm (12.85 in.)

Width 512.20 mm (20.17 in.) 550.60 mm (21.68 in.)

Depth 52.40 mm (2.06 in.) 52.40 mm (2.06 in.)

Stand dimensions

Height 176.90 mm (6.96 in.) 176.90 mm (6.96 in.)

Width 200.00 mm (7.87 in.) 200.00 mm (7.87 in.)

Depth

Weight E2221HN E2421HN

Weight with
packaging

With stand
assembly and cables

Without stand
assembly and cables

Weight of stand
assembly

D-Sub (VGA), 15 pins (cable is included for EMEA and JPN region only);
HDMI, 19 pins

E2221HN E2421HN

E2221HN E2421HN

E2221HN E2421HN

171.00 mm (6.73 in.) 171.00 mm (6.73 in.)

4.90 kg (10.80 lb) 5.95 kg (13.12 lb)

3.51 kg (7.74 lb) 4.27 kg (9.41 lb)

2.70 kg (5.95 lb) 3.25 kg (7.17 lb)

0.44 kg (0.97 lb) 0.59 kg (1.30 lb)

About your monitor │ 11

Environmental characteristics

Model E2221HN/E2421HN

Temperature:
Operating

Non-operating:
Storage Shipping

Humidity:
Operating

Non-operating:
Storage Shipping

Altitude:

Operating (maximum)

Non-operating (maximum) 12,192 m (40,000 ft)

Model E2221HN E2421HN

Thermal dissipation 54.59 BTU/hour (maximum)

0°C to 40°C (32°F to 104°F)

-20°C to 60°C (-4°F to 140°F)

10% to 80% (non-condensing)

5% to 90% (non-condensing)

5,000 m (16,400 ft)

44.36 BTU/hour (typical)

68.24 BTU/hour (maximum)

51.18 BTU/hour (typical)

12 │ About your monitor

Power Management Modes

If you have VESA’s DPM™ compliance display card or software installed in your PC, the
monitor can automatically reduce its power consumption when not in use. This is referred
to as Standby Mode. If the computer detects input from the keyboard, mouse, or other
input devices, the monitor automatically resumes functioning. The following table shows
the power consumption and signaling of this automatic power saving feature.

E2221HN

VESA Modes

Horizontal
sync

Normal operation Active Active Active White

Active-off mode Inactive Inactive Blanked

Vertical
sync

Video

Power
indicator

White
(Glowing)

Power
consumption

16 W (maximum)**
13 W (typical)

Less than 0.3 W

Switch-off - - - Off Less than 0.3 W

Power Consumption P

ON

11.21 W

Total Energy Consumption(TEC) 35.16 kWh

E2421HN

VESA Modes

Horizontal
sync

Normal operation Active Active Active White

Active-off mode Inactive Inactive Blanked

Switch-off - - - Off Less than 0.3 W

Power Consumption P

ON

Total Energy Consumption(TEC) 38.52 kWh

Vertical
sync

12.34 W

Video

Power
indicator

White
(Glowing)

Power
consumption

20 W (maximum)**
15 W (typical)

Less than 0.3 W

**Maximum power consumption with max luminance and contrast.

About your monitor │ 13

This document is informational only and reflects laboratory performance. Your
product may perform differently, depending on the software, components and
peripherals you ordered and shall have no obligation to update such information.

Accordingly, the customer should not rely upon this information in making
decisions about electrical tolerances or otherwise. No warranty as to accuracy or

completeness is expressed or implied.

NOTE: This monitor is ENERGY STAR certified.

This product qualifies for ENERGY STAR in the factory default settings which
can be restored by "Factory Reset" function in the OSD menu. Changing
the factory default settings or enabling other features may increase power
consumption that could exceed the ENERGY STAR specified limit.

NOTE:

PON : Power consumption of On Mode as defined in Energy Star 8.0 version.
TEC: Total energy consumption in kWh as defined in Energy Star 8.0 version.

The OSD functions only in the normal operation mode. When any button is pressed in the
Active-off mode, one of the following messages will be displayed:

Dell 2X Monitor

?

The display will go into Standby mode in 4 minutes.

14 │ About your monitor

No HDMI Cable

www.dell.com/E2X21HN

E2X21HN

Plug and play capability

You can install the monitor in any Plug and Play-compatible system. The monitor automatically
provides the computer system with its Extended Display Identification Data (EDID) using
Display Data Channel (DDC) protocols so the system can configure itself and optimize the
monitor settings. Most monitor installations are automatic, you can select different settings
if desired. For more information about changing the monitor settings, see Operating your

monitor.

LCD monitor quality and pixel policy

During the LCD Monitor manufacturing process, it is normal for one or more pixels to become
fixed in an unchanging state which are hard to see and do not affect the display quality or
usability. For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site
at www.dell.com/support/monitors.

Maintenance guidelines

Cleaning your monitor

WARNING: Before cleaning the monitor, unplug the monitor power cable

from the electrical outlet.

CAUTION: Read and follow the Safety Instructions before cleaning the

monitor.

For best practices, follow the instructions in the list below while unpacking, cleaning or
handling your monitor:

• To clean your screen, lightly dampen a soft, clean cloth with water. If possible, use a
special screen-cleaning tissue or solution suitable for the anti-static coating. Do not
use ben zene, thinner, ammonia, abrasive cleaners or compressed air.

• Use a lightly-dampened cloth to clean the monitor. Avoid using detergent of any kind
as some detergents leave a milky film on the monitor.

• If you notice white powder when you unpack your monitor, wipe it off with a cloth.

• Handle your monitor with care as the black-colored monitor may get scratched.

• To help maintain the best image quality on your monitor, use a dynamically changing

screen saver and turn off your monitor when not in use.

About your monitor │ 15

Setting up the monitor

Connecting the stand

NOTE: The stand is not attached when the monitor is shipped from the

factory.

NOTE: The following procedure is applicable for the stand that shipped with

your monitor.

To attach the monitor stand:
E2221HN

1. Assemble the stand riser to stand base.

a. Place the monitor stand base on a stable table top.
b. Slide the monitor stand body in the correct direction down onto the stand base

until it clicks into place.

2. Attach the stand assembly to the monitor.

a. Place the monitor on a soft cloth or cushion near the edge of desk.
b. Align the stand assembly bracket to the monitor groove.
c. Insert the bracket towards monitor until it locks in place.
d. Attach VESA cover.

16 │ Setting up the monitor

Connecting the stand

NOTE: The stand is not attached when the monitor is shipped from the

factory.

NOTE: The following procedure is applicable for the stand that shipped with

your monitor.

To attach the monitor stand:
E2421HN

1. Assemble the stand riser to stand base.

a. Place the monitor stand base on a stable table top.
b. Slide the monitor stand body in the correct direction down onto the stand base

until it clicks into place.

2. Attach the stand assembly to the monitor

a. Place the monitor on a soft cloth or cushion near the edge of desk.
b. Align the stand assembly bracket to the monitor groove.
c. Insert the bracket towards monitor until it locks in place.
d. Attach VESA cover.

Setting up the monitor │ 17

Connecting your monitor

WARNING: Before you begin any of the procedures in this section, follow

the Safety Instructions.

NOTE: Do not connect all cables to the computer at the same time. It is

recommended to route the cables through the cable-management slot
before you connect them to the monitor.

NOTE: Dell monitors are designed to work optimally with Dell supplied inbox

cables. Dell does not guarantee the video quality and performance when
using non-Dell cables.

To connect your monitor to the computer:

1. Turn off your computer and disconnect the power cable.

2. Connect HDMI or VGA cable from your monitor to the computer.

Connecting HDMI/VGA cable

Organizing cables

Use the cable-management slot to route the cables connected to your monitor.

18 │ Setting up the monitor

Removing the stand

NOTE: To prevent scratches on the screen when removing the stand, ensure

that the monitor is placed on a soft and clean surface.

NOTE: The following procedure is applicable for the stand that shipped with

your monitor.

To remove the stand:
E2221HN

1. a. Place the monitor on a soft cloth along the desk.
b. Remove VESA cover to access the release button.

2. a. Use a long and thin screwdriver to push the release latch located in a hole just above
the stand.
b. Once the latch is released, remove the base away from the monitor.
c. Press down on the quick release tab latch on the bottom of the base to separate base
from stand riser.

Setting up the monitor │ 19

Removing the stand

NOTE: To prevent scratches on the screen when removing the stand, ensure

that the monitor is placed on a soft and clean surface.

NOTE: The following procedure is applicable for the stand that shipped with

your monitor.

To remove the stand:
E2421HN

1. a. Place the monitor on a soft cloth along the desk.
b. Remove VESA cover to access the release button.

2. a. Use a long and thin screwdriver to push the release latch located in a hole just above
the stand.
b. Once the latch is released, remove the base away from the monitor.
c. Press down on the quick release tab latch on the bottom of the base to separatebase
from stand riser.

20 │ Setting up the monitor

Wall Mounting (Optional)

(Screw dimension: M4 x 10 mm).

Refer to the instructions that come with the VESA-compatible base mounting kit.

1. Place the monitor panel on a soft cloth or cushion on a stable flat table.

2. Remove the stand.

3. Use a screwdriver to remove the four screws securing the plastic cover.

4. Attach the mounting bracket from the wall mounting kit to the LCD.

5. Mount the LCD on the wall by following the instructions that came with the base

mounting kit.

NOTE: For use only with UL or CSA or GS-listed wall-mount bracket with

minimum weight/ load bearing capacity of 10.80 kg (23.80 lb) for E2221HN,

13.00 kg (28.66 lb) for E2421HN.

Setting up the monitor │ 21

Operating your monitor

Turning on the monitor

Press the button to turn on the monitor.

Using the front panel controls

Use the control buttons at the bottom edge of the monitor to adjust the image being displayed.

12345

The following table describes the control buttons:

Control Buttons Description

1

Preset modes

2

Brightness/Contrast

3

Menu

4

Exit

5

Power button

(with power-status light)

Use this button to choose from a list of preset modes.

For direct access to the Brightness and Contrast menu.

To launch the On-Screen Display (OSD) menu, or to
access the list of items / options of a menu item. For
more information, see Accessing the OSD menu.

To exit or return to the OSD main menu.

To turn the monitor on or off.
Solid white light indicates the monitor is turned on and
functioning normally. Blinking white light indicates the
monitor is in Standby mode.

22 │ Operating your monitor

OSD controls

Use the buttons on the bottom edge of the monitor to adjust the image settings.

1234

Control Buttons Description

1

2

3

4

Up

Down

OK

Back

Use the Up button to increase values or move up in a
menu.

Use the Down button to decrease values or move down
in a menu.

Use the OK button to confirm your selection in a menu.

Use the Back button to go back to the previous menu.

Operating your monitor │ 23

Using the On-Screen Display (OSD) menu

Accessing the OSD menu

NOTE: Any changes you make are automatically saved when you move

to another menu, exit the OSD menu, or wait for the OSD menu to close
automatically.

1. Press the button to display the OSD main menu.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

2. Press the and buttons to move between the setting options. As you move from one
icon to another, the option name is highlighted.

75%

75%

3. Press the button once to activate the highlighted option.

4. Press and button to select the desired parameter.

5. Press and then use the and buttons, according to the indicators on the menu, to

make your changes.

6. Select the button to return to the main menu.

24 │ Operating your monitor

Icon Menu and

Submenus

Brightness/
Contrast

Description

Use this option to control the brightness or contrast settings.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

75%

75%

Brightness

Contrast

Brightness adjusts the luminance of the backlight.

Press the button to increase the brightness and press the

button to decrease the brightness (min. 0; max. 100).

Adjust the brightness first, and then adjust the contrast only if
further adjustment is necessary.

Press the button to increase the contrast and press the
button to decrease the contrast (min. 0; max. 100).
The contrast function adjusts the degree of difference between
darkness and lightness on the screen.

Operating your monitor │ 25

Icon Menu and

Submenus

Auto Adjust

Description

Use this option to activate automatic setup and adjust menu.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

The following dialog appears on a black screen as the monitor self­adjusts to the current input:

Auto Adjust allows the monitor to self-adjust to the incoming
video signal. After using Auto Adjustment, you can further tune
your monitor by using the Pixel Clock (Coarse) and Phase (Fine)
controls under Display.
NOTE: Auto Adjust does not occur if you press the button while
there are no active video input signals or attached cables.
This option is only available when you are using the analog (VGA)
connector.

Press to adjust the screen automatically

Auto Adjustment in Progress...

26 │ Operating your monitor

Icon Menu and

Submenus

Input Source

Description

Use the input source menu to switch between the different video
signals that may be connected to your monitor.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

VGA

HDMI

Auto Select

Reset Input Source

On

VGA

HDMI

Auto Select

Reset Input
Source

Color

Push to select the VGA input source when using VGA connector.

Push to select the HDMI input source when using HDMI

connector.

Select Auto Select to scan for available input signals.

Select this option to restore default input source.

Use color to adjust the color setting mode.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Preset Modes

Input Color Format

Reset Color

Standard

RGB

Operating your monitor │ 27

Icon Menu and

Submenus

Preset Modes

Description

When you select Preset Modes, you can choose Standard,
ComfortView, Warm, Cool, Custom Color from the list.

• Standard: Load the monitor's default color settings. This is the

default preset mode.

• ComfortView: Decreases the level of blue light emitted fromthe
screen to make viewing more comfortable for your eyes.
NOTE: To reduce the risk of eye strain and neck/arm/back/
shoulders pain from using the monitor for long periods of time,
we suggest that you:

- Set the screen about 20~28 in. (50~70 cm) from your eyes.

- Blink frequently to moisten or lubricate your eyes.

- Take regular 20-minute breaks every two hours.

- Look away from your monitor and gaze at a distant object

at 20 feet away for at least 20 seconds during the breaks.

- Perform stretches to relieve tension in the neck/arm/back/

shoulders during the breaks.

• Warm: Increase the color temperature. The screen appears
warmer with a red/yellow tint.

• Cool: Decrease the color temperature. The screen appears
cooler with a blue tint.

• Custom Color: Allows you to manually adjust the color settings.

Press the and buttons to adjust the three colors (R, G, B)
values and create your own preset color mode.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

28 │ Operating your monitor

Preset Modes

Input Color Format

Reset Color

Standard

ComfortView

Warm

Cool

Custom Color

Icon Menu and

Submenus

Input Color
Format

Description

Allow you to set the video input mode to:

• RGB: Select this option if your monitor is connected to a
computer or DVD player using the HDMI cable.

• YPbPr: Select this option if your DVD player supports only
YPbPr output.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Preset Modes

Input Color Format

Reset Color

RGB

YPbPr

Reset Color

Display

Reset your monitor color settings to the factory settings.

Use the display to adjust image.

E2221HN

Dell 22 Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Aspect Ratio

Horizontal Position

Vertical Position

Sharpness

Pixel Clock

Phase

Reset Display

Wide 16:9

50

E2421HN

Dell XX Monitor

Dell 24 Monitor

Brightness / Contrast

Brightness / Contrast

Auto Adjust

Auto Adjust

Input Source

Input Source

Color

Color

Display

Display

Menu

Menu

Personalize

Personalize

Others

Others

Aspect Ratio

Aspect Ratio

Horizontal Position

Horizontal Position

Vertical Position

Vertical Position

Sharpness

Sharpness

Pixel Clock

Pixel Clock

Phase

Phase

Reset Display

Response Time

Wide 16:9

Wide 16:9

50

50

Normal

Operating your monitor │ 29

Icon Menu and

Submenus

E2421HN

Dell XX Monitor

Dell 24 Monitor

Brightness / Contrast

Brightness / Contrast

Auto Adjust

Auto Adjust

Input Source

Input Source

Color

Color

Display

Display

Menu

Menu

Personalize

Personalize

Others

Others

Description

Aspect Ratio

Horizontal Position

Reset Display

Vertical Position

Sharpness

Pixel Clock

Phase

Reset Display

Wide 16:9

50

Aspect Ratio

Horizontal
Position
(VGA input only)

Vertical
Position
(VGA input only)

Sharpness

Pixel Clock
(VGA input only)

Phase
(VGA input only)

Response
Time

Adjust the image ratio to Wide 16:9, 4:3 or 5:4.

Use or to move image left and right.

Minimum is '0' (-). Maximum is '100' (+).

Use the or to move image up and down.

Minimum is '0' (-). Maximum is '100' (+).

This feature can make the image look sharper or softer.

Use or to adjust the sharpness from 0 to 100.

The Pixel Clock feature enables you to adjust image quality on your
monitor to your preference.

Use or buttons to adjust for best image quality.

If satisfactory results are not obtained using the Phase adjustment,
use the Pixel Clock (coarse) adjustment and then use Phase (fine),
again.

Allow you to select between Normal (8 ms), Fast (5 ms).

Reset Display

Select this option to restore default display settings.

30 │ Operating your monitor

Icon Menu and

Submenus

Menu

Description

Select this option to adjust the settings of the OSD, such as the
languages of the OSD, the amount of time, the menu remains on
screen and so on.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Language

Transparency

Timer

Lock

Reset Menu

English

20

20 s

Disable

Language

Transparency

Timer

Lock

Reset Menu

Language options set the OSD display to one of the eight languages
(English, Spanish, French, German, Brazilian Portuguese, Russian,
Simplified Chinese, or Japanese).

Select this option to change the menu transparency by pressing

the or buttons from 0 to 100.

OSD hold time: sets the length of time , the OSD will remain active
after the last time you pressed a button.

Use or to adjust the slider in 1 second increments, from 5

to 60 seconds.

Controls user access to adjustments. When Lock is selected, no

user adjustments are allowed. All keys are locked except key.

To unlock, please use one of the following options :

1. Press the menu key takes you directly to the OSD menu to unlock.

2. Press and hold key of the monitor for 4 seconds to unlock.

Select this option to restore default menu settings.

Operating your monitor │ 31

Icon Menu and

Submenus

Personalize

Description

Selecting this option allows you to set two shortcut keys and
power LED indicator function.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Shortcut Key 1

Shortcut Key 2

Power Button LED

Reset Personalization

Preset Modes

Brightness / Contrast

On in On Mode

Shortcut Key 1

Shortcut Key 2

Power Button
LED

Reset
Personalization

Allow you to select one of the following: Preset Modes,
Brightness/Contrast, Auto Adjust, Input Source, Aspect Ratio, to
set the shortcut key 1.

Allow you to select one of the following: Preset Modes,
Brightness/Contrast, Auto Adjust, Input Source, Aspect Ratio, to
set the shortcut key 2.

Allow you to set the power LED indicator On in On Mode or Off in
On Mode to save energy.

Allow you to restore shortcut key to the default setting.

32 │ Operating your monitor

Icon Menu and

Submenus

Others

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Description

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

On

O

ABCDEFG

ENERGY STAR

®

Display Info

DDC/CI

Press to display the information about the display.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

Model: Dell E2X21HN

Input Source: VGA

Current: 1920x1080, 60Hz

DDC/CI (Display Data Channel/Command Interface) allows you to
adjust the monitor settings using software on your computer.
Select off to turn off this feature.
Enable this feature for best user experience and optimum
performance of your monitor.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

On

O

Operating your monitor │ 33

Icon Menu and

Submenus

LCD
Conditioning

Description

Help reduce minor cases of image retention. Depending on the
degree of image retention, the program may take some time to run.
To start LCD Conditioning , select On.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

On

O

Service Tag

Reset Others

Factory Reset

Display the Service Tag number of the monitor.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

On

O

ABCDEFG

ENERGY STAR

®

Reset all settings under the Others setting menu to the factory
default.

Restore all preset values to the factory default setting. These
are also the settings for ENERGY STAR® tests.

Dell 2X Monitor

Brightness / Contrast

Auto Adjust

Input Source

Color

Display

Menu

Personalize

Others

Display Info

DDC/CI

LCD Conditioning

Service Tag

Reset Others

Factory Reset

On

O

ABCDEFG

ENERGY STAR

®

34 │ Operating your monitor

Before the DDC/CI function is disabled, the following message is displayed.

Dell 2X Monitor

The function of adjusting display setting using PC application

will be disabled.

Do you wish to disable DDC/CI function?

Yes

No

E2X21HN

The Power Warning Message box below shall apply to Brightness functions for the first time
when user adjust the Brightness level above the default level.

Dell 2X Monitor

Adjusting to this value will increase power consumption above the

default level. Do you want to continue?

Yes

No

E2X21HN

When the monitor enters Standby mode, the following message appears.

Dell 2X Monitor

Going into Standby mode...

E2X21HN

If VGA or HDMI cable is not connected, a floating dialog box as shown below appears. The
monitor will enter Standby mode after 4 minutes if left at this state.

Dell 2X Monitor

No HDMI Cable

?

The display will go into Standby mode in 4 minutes.

www.dell.com/E2X21HN

E2X21HN

See Troubleshooting for more information.

Operating your monitor │ 35

Setting up your monitor

Setting display resolution to 1920 x 1080

For best performance, set the display resolution to 1920 x 1080 pixels by performing the
following steps:

In Windows 7:

1. Right-click on the desktop and click Screen Resolution.

2. Click the drop-down menu of the Screen Resolution and select 1920 x 1080.

3. Click OK.

In Windows 8 or Windows 8.1:

1. Select the Desktop tile to switch to classic desktop.

2. Right-click on the desktop and click Screen Resolution.

3. Click the drop-down menu of the Screen Resolution and select 1920 x 1080.

4. Click OK.

In Windows 10:

1. Right-click on the desk top and click Display Settings.

2. Click Advanced Display Settings.

3. Click the drop-down menu under Resolution and select 1920 x 1080.

4. Click Apply.

If you do not see the recommended resolution as an option, you may need to update your
graphics driver. Use one of the following methods to update the graphics driver:

Dell computer

1. Go to www.dell.com/support, enter your service tag, and download the latest driver for

your graphics card.

2. After installing the drivers for your graphics adapter, attempt to set the resolution to
1920 x 1080 again.

NOTE: If you are unable to set the resolution to 1920 x 1080, please contact

Dell to inquire about a graphics adapter that supports these resolutions.

36 │ Operating your monitor

Non-Dell computer

In Windows 7:

1. Right-click on the desktop and click Personalization.

2. Click Change Display Settings.

3. Click Advanced Settings.

4. Identify your graphics controller supplier from the description at the top of the window

(e.g. NVIDIA, AMD, Intel etc.).

5. Refer to the graphic card provider website for updated driver (for example,
www.AMD.com or www.NVIDIA.com).

6. After installing the drivers for your graphics adapter, attempt to set the resolution to
1920 x 1080 again.

In Windows 8 or Windows 8.1:

1. Select the Desktop tile to switch to classic desktop.

2. Right-click on the desktop and click Personalization.

3. Click Change Display Settings.

4. Click Advanced Settings.

5. Identify your graphics controller supplier from the description at the top of the window

(e.g. NVIDIA, AMD, Intel etc.).

6. Refer to the graphic card provider website for updated driver (for example,
www.AMD.com or www.NVIDIA.com).

7. After installing the drivers for your graphics adapter, attempt to set the resolution to
1920 x 1080 again.

In Windows 10:

1. Right-click on the desktop and click Display Settings.

2. Click Advanced display settings.

3. Click Display adapter properties.

4. Identify your graphics controller supplier from the description at the top of the window

(e.g. NVIDIA, AMD, Intel etc.).

5. Refer to the graphic card provider website for updated driver (for example,
www.AMD.com or www.NVIDIA.com).

6. After installing the drivers for your graphics adapter, attempt to set the resolution to
1920 x 1080 again.

NOTE: If you are unable to set the recommended resolution, please contact

the manufacturer of your computer or consider purchasing a graphics
adapter that supports the video resolution.

Operating your monitor │ 37

Using tilt

You can tilt the monitor for the most comfortable viewing angle.

NOTE: The stand is not attached when the monitor is shipped from the

factory.

5°

21°

38 │ Operating your monitor

Troubleshooting

WARNING: Before you begin any of the procedures in this section, follow

the Safety Instructions.

Self-test

Your monitor provides a self-test feature that allows you to check if your monitor is functioning
properly. If your monitor and computer are properly connected but the monitor screen remains
dark, run the monitor self-test by performing the following steps:

1. Turn off both your computer and the monitor.

2. Disconnect all video cables from the monitor. This way, the computer doesn’t have to be

involved.

3. Turn on the monitor.

If the monitor is working correctly, it detects that there is no signal and one of the following
message appears. While in self-test mode, the power LED remains white.

E2221HN

E2421HN

Dell 22 Monitor

No HDMI Cable

?

The display will go into Standby mode in 4 minutes.

www.dell.com/E2221HN

Dell 24 Monitor

No HDMI Cable

?

The display will go into Standby mode in 4 minutes.

www.dell.com/E2421HN

E2221HN

E2421HN

NOTE: This box also appears during normal operation, when the video cable

is disconnected or damaged.

4. Turn off your monitor and reconnect the video cable; then turn on your computer and the

monitor.
If your monitor remains dark after you reconnect the cables, check your video controller and
computer.

Troubleshooting │ 39

Built-in diagnostics

Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality
you experience is an inherent problem with your monitor, or with your computer and video card.

4321

To run the built-in diagnostics:

1. Ensure that the screen is clean (no dust particles on the surface of the screen).

2. Press and Hold Button 1 for about 4 seconds and wait for a pop up menu.

3. Press Button 3 or 4 to select the diagnostic tool and confirm with Button 2.

A gray test pattern appears at the beginning of the diagnostic program.

4. Carefully inspect the screen for abnormalities.

5. Press Button 4 to change the test patterns.

6. Repeat steps 4 and 5 to inspect red, green, blue, black, white and text screens.

7. Press Button 4 to end the diagnostic program.

40 │ Troubleshooting

Common problems

The following table contains general information about common monitor problems
you might encounter and the possible solutions:

Common Symptoms Possible Solutions

No Video/Power LED off • Ensure that the video cable connecting the monitor and the computer is

properly connected and secure.

• Verify that the power outlet is functioning properly using any other electrical

equipment.

• Ensure that the power button is pressed.

• Ensure that the correct input source is selected via the Input Source menu.

No Video/Power LED on • Increase brightness and contrast controls using the OSD.

• Perform monitor self-test feature check.

• Check for bent or broken pins in the video cable connector.

• Run the built-in diagnostics.

• Ensure that the correct input source is selected via the Input Source menu.

Poor focus • Eliminate video extension cables.

• Reset the monitor to Factory Settings (Factory Reset).

• Change the video resolution to the correct aspect ratio.

Shaky/Jittery video • Reset the monitor to Factory Settings (Factory Reset).

• Check environmental factors.

• Relocate the monitor and test in another room.

Missing pixels • Cycle power On-off.

• Pixel that is permanently off is a natural defect that can occur in LCD

technology.

• For more information on Dell Monitor Quality and Pixel Policy,

see Dell Support site at:
www.dell.com/support/monitors.

Stuck-on pixels • Cycle power On-off.

• Pixel that is permanently off is a natural defect that can occur in LCD

technology.

• For more information on Dell Monitor Quality and Pixel Policy, see Dell

Support site at:
www.dell.com/support/monitors.

Brightness problems • Reset the monitor to Factory Settings (Factory Reset).

• Adjust brightness & contrast controls via OSD.

Geometric distortion • Reset the monitor to Factory Settings (Factory Reset).

• Adjust brightness & contrast controls via OSD.

Horizontal/Vertical lines • Reset the monitor to Factory Settings (Factory Reset).

• Perform monitor self-test feature check and determine if these lines are

also in self-test mode.

• Check for bent or broken pins in the video cable connector.

• Run the built-in diagnostics.

Troubleshooting │ 41

Common Symptoms Possible Solutions

Synchronization

problems

• Reset the monitor to Factory Settings (Factory Reset).

• Perform monitor self-test feature check to determine if the scrambled

screen appears in self-test mode.

• Check for bent or broken pins in the video cable connector.

• Restart the computer in safe mode.

Safety related issues • Do not perform any troubleshooting step.

• Contact Dell immediately.

Intermittent problems • Try different Preset Modes in Color settings OSD. Adjust R/G/B value in

Custom Color in Color settings OSD.

• Change the Input Color Format to RGB or YPbPr in the Color settings

OSD.

• Run the built-in diagnostics.

Image retention from a static

image left on the monitor for

a long period of time

Video ghosting or

overshooting

• Use the Power Management feature to turn off thr monitor all times when

not in use (for more information, see Power management modes.

• Alternatively, use a dynamically changing screensaver.

• Change the Response Time in the Display OSD to Fast or Normal

depending on your application and usage.

42 │ Troubleshooting

Product-specific problems

Specific Symptoms Possible Solutions

Screen image is too small • Check the Aspect Ratio setting in the Display settings OSD.

• Reset the monitor to Factory Settings (Factory Reset).

Cannot adjust the monitor

with the buttons on the

bottom of the panel

No input signal when user

controls are pressed

The picture does not fill the

entire screen

• Turn off the monitor, unplug the power cord, plug it back, and then turn on

the monitor.

• Check the signal source. Ensure the computer is not in standby or sleep

mode by moving the mouse or pressing any key on the keyboard.

• Check if the video cable is plugged in properly. Disconnect and reconnect

the video cable if necessary.

• Reset the computer or video player.

• Due to different video formats (aspect ratio) of DVDs, the monitor may

display in full screen.

• Run the built-in diagnostics.

Troubleshooting │ 43

Appendix

Safety instructions

WARNING: Use of controls, adjustments, or procedures other than those

specified in this documentation may result in exposure to shock, electrical
hazards, and/or mechanical hazards.

For information on safety instructions, see the Product Information Guide.

FCC Notices (U.S. Only) and Other Regulatory Information

For FCC notices and other regulatory information, see the regulatory compliance
website located at www.dell.com/regulatory_compliance.

Contact Dell

For customers in the United States, call 800-WWW-DELL (800-999-3355).

NOTE: If you do not have an active Internet connection, you can find

contact information on your purchase invoice, packing slip, bill, or Dell
product catalog.

Dell provides several online and telephone-based support and service options.
Availability varies by country and product, and some services may not be availa­ble in your area.

To get online Monitor support content:
Visit www.dell.com/support/monitors.
To contact Dell for sales, technical support, or customer service issues:

1. Visit www.dell.com/support.

2. Verify your country or region in the Choose A Country/Region drop-down menu at

the bottom of the page.

3. Click Contact Us on the left side of the page.

4. Select the appropriate service or support link based on your need.

5. Choose the method of contacting Dell that is convenient for you.

44 │ Appendix

Pin assignments

D-Sub 15-pin connector

HDMI 19-pin connector

Pin Number Signal Assignment

1 Video-Red

2 Video-Green

3 Video-Blue

4 GND

5 Self-test

6 GND-R

7 GND-G

8 GND-B

9 DDC +5 V

10 GND-sync

11 GND

12 DDC data

13 H-sync

14 V-sync

15 DDC clock

Pin Number Signal Assignment

1 TMDS DATA 2+

2 TMDS DATA 2 SHIELD

3 TMDS DATA 2-

4 TMDS DATA 1+

5 TMDS DATA 1 SHIELD

6 TMDS DATA 1-

7 TMDS DATA 0+

8 TMDS DATA 0 SHIELD

9 TMDS DATA 0-

10 TMDS CLOCK+

11 TMDS CLOCK SHIELD

12 TMDS CLOCK-

13 CEC

14 Reserved (N.C. on device)

15 DDC CLOCK (SCL)

16 DDC DATA (SDA)

17 DDC/CEC Ground

18 +5 V POWER

19 HOT PLUG DETECT

Appendix │ 45