Dell D2421H Manuale utente

Monitor Model: D2421H/D2721H/D2421DS

Regulatory Model: D2421Ho/D2721Ho/D2421DSo

Dell Monitor

D2421H/D2721H/D2421DS

User’s Guide

trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their

respective owners.

2020 – 04

Rev. A00

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.

│3

Contents

About Your Monitor .................................5

Package Contents . . . . . . . . . . . . . . . . . . . . . . 5

Product Features. . . . . . . . . . . . . . . . . . . . . . .6

Identifying Parts and Controls. . . . . . . . . . . . . . . .7

Monitor Specifications. . . . . . . . . . . . . . . . . . . 11

Plug and Play. . . . . . . . . . . . . . . . . . . . . . . . 23

LCD Monitor Quality & Pixel Policy . . . . . . . . . . . . 23

Setting Up the Monitor .............................24

Connecting the stand . . . . . . . . . . . . . . . . . . . 24

Using the Tilt and Vertical Extension . . . . . . . . . . . 26

Rotating the Monitor. . . . . . . . . . . . . . . . . . . . 27

Connecting Your Monitor . . . . . . . . . . . . . . . . . 28

Removing the Monitor Stand . . . . . . . . . . . . . . . 29

Wall Mounting (Optional) . . . . . . . . . . . . . . . . . 31

Operating the Monitor ..............................32

Power On the Monitor . . . . . . . . . . . . . . . . . . . 32

Using the Front-Panel Controls . . . . . . . . . . . . . . 32

Using the OSD Lock function . . . . . . . . . . . . . . . 33

Using the On-Screen Display (OSD) Menu . . . . . . . . 33

Troubleshooting ...................................41

Common Problems . . . . . . . . . . . . . . . . . . . . . 41

4 │

Product-Specific Problems . . . . . . . . . . . . . . . . 44

Appendix.........................................45

Safety Instructions. . . . . . . . . . . . . . . . . . . . . 45

Contact Dell . . . . . . . . . . . . . . . . . . . . . . . . 45

Setting Up Your Monitor . . . . . . . . . . . . . . . . . . 45

Setting Up Your Monitor . . . . . . . . . . . . . . . . . . 47

Maintenance Guidelines . . . . . . . . . . . . . . . . . . 49

About Your Monitor │5

About Your Monitor

Package Contents

Your monitor ships with all the components shown below. Ensure that you have received

all the components and Contact Dell if anything is missing.

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

features or media may not be available in certain countries.

Display

a. D2421DS

b. D2421H/D2721H

Stand Riser

a. D2421DS

b. D2421H

c. D2721H

Stand base

a. D2421DS

b. D2421H

c. D2721H

Screws x 2 (D2721H)

Power Cable

HDMI Cable

b c

6 │About Your Monitor

Quick Setup Guide

Safety and Regulatory

Information

Product Features

The Dell D2421H/D2721H/D2421DS flat-panel display has an active matrix, Thin-Film

Transistor (TFT), Liquid Crystal Display (LCD) Panel with LED backlight. The monitor

features include:

• D2421H: 60.5 cm (23.8 in.) diagonal viewable image size, 1920 x 1080 resolution,

plus full-screen support for lower resolutions.

• D2721H: 68.6 cm (27 in.) diagonal viewable image size, 1920 x 1080 resolution, plus

full-screen support for lower resolutions.

• D2421DS: 60.5 cm (23.8 in.) diagonal viewable image size, 2560 x 1440 resolution,

full-screen support for lower resolutions.

• Tilt adjustment capability.

• Removable pedestal and Video Electronics Standards Association (VESA) 100 mm

mounting holes for flexible mounting solutions.

• D2421H/D2721H:Digital connectivity with HDMI and Analog connectivity with

VGA.

• D2421DS: Digital connectivity with DisplayPort and HDMI.

• Height adjustment and pivot capability for D2421DS.

• Plug and play capability if supported by your system.

• On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.

• Security lock slot.

• RoHS compliant.

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

damage to the eyes, including eye fatigue, digital eye strain, and so on. TÜV-

certified ComfortView feature is designed to reduce the amount of blue light

emitted from the monitor to help optimize eye comfort.

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

• 0.5 W standby power when in the sleep mode.

About Your Monitor │7

Identifying Parts and Controls

NOTE: The graphics are used for the purpose of illustration only. Appearance on

the computer may vary.

D2421H

Front view

123

Label Description

1Function buttons (For more information, see Operating the Monitor)

2Power On/Off button

3 LED indicator

Back view

⏨Წᱴ⽰ಞ/FlatPanel Monitor

ශModelNo.: D2421H

䗉ޛ⭫Ⓠ/Rating:

100-240V~50/60Hz 0.8A

࡬䙖൦ѣളMade in China

࡬䙖ᰛᵕManufactureddate:

DELL D2421H

April2020













⏨Წᱴ⽰ಞ/FlatPanel Monitor

ශModelNo.: D2421H

䗉ޛ⭫Ⓠ/Rating:

100-240V~50/60Hz 0.8A

࡬䙖൦ѣളMade in China

࡬䙖ᰛᵕManufactureddate:

DELLD2421H

April2020













Back View with Monitor Stand

Label Description Use

1 VESA mounting holes (100 mm) Supports optional mounting of the monitor

using a VESA mount or arm.

2 Security lock slot Secures monitor with security lock

(security lock not included).

8 │About Your Monitor

3 Regulatory rating label with

Barcode serial number

Lists the regulatory approvals. Refer to

this label if you need to contact Dell for

technical support.

4 Stand release button Release stand from monitor.

Bottom View

1 2 3 4

Label Description Use

1 AC power connector To connect the monitor power cable.

2 HDMI connector To connect your computer to the monitor using a HDMI

cable.

3 VGA connector To connect your computer to the monitor using a VGA

cable.

4 Earphone connector To connect your earphone

D2721H

Front view

123

Label Description

1Function buttons (For more information, see Operating the Monitor)

About Your Monitor │9

2Power On/Off button

3 LED indicator

Back view

⏨Წᱴ⽰ಞ/FlatPanel Monitor

ශModelNo.: D2721H

䗉ޛ⭫Ⓠ/Rating:

100-240V~50/60Hz 1.0A

࡬䙖൦ѣളMadein China

࡬䙖ᰛᵕManufactureddate:

DELL D2721H

April2020













⏨Წᱴ⽰ಞ/FlatPanel Monitor

ශModelNo.: D2721H

䗉ޛ⭫Ⓠ/Rating:

100-240V~50/60Hz 1.0A

࡬䙖൦ѣളMadein China

࡬䙖ᰛᵕManufactureddate:

DELL D2721H

April2020













Back View with Monitor Stand

Label Description Use

1 VESA mounting holes (100 mm) Supports optional mounting of the monitor

using a VESA mount or arm.

2 Security lock slot Secures monitor with security lock

(security lock not included).

3 Regulatory rating label with

Barcode serial number

Lists the regulatory approvals. Refer to

this label if you need to contact Dell for

technical support.

4 Stand release button Release stand from monitor.

Bottom View

123

Label Description Use

1 AC power connector To connect the monitor power cable.

10 │About Your Monitor

2 HDMI connector To connect your computer to the monitor using a HDMI

cable.

3 VGA connector To connect your computer to the monitor using a VGA

cable.

D2421DS

Front view

123

Label Description

1Function buttons (For more information, see Operating the Monitor)

2Power On/Off button

3 LED indicator

Back view

Back View with Monitor Stand

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