Dell P2421DC User manual

Model : P2421DC

Regulatory model : P2421DCc

Dell 24 USB-C Monitor - P2421DC

Dell Display Manager

User’s Guide

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.

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

owners.

2020 – 02

Rev. A00

Contents | 3

Contents

Overview ....................................................... 4

Using The Quick Settings Dialog...................... 5

Setting Basic Display Functions....................... 7

Assigning Preset Modes To Applications .......... 9

Organizing Windows With Easy Arrange ..........10

Managing Multiple Video Inputs...................... 13

Restoring Application Positions...................... 14

Attach DDM To Active Window (Only Window 10)

.................................................................... 17

Applying Energy Conservation Features .......... 18

Troubleshooting............................................ 19

4| Overview

Overview

Dell Display Manager is a Windows application used to manage a monitor or a group

of monitors. It enables manual adjustment of the displayed image, assignment of

automatic settings, energy management, image rotation and other features on

selected Dell models. After installation, Dell Display Manager will run each time

the system starts and will place its icon in the notification tray. Information about

monitors connected to the system is always available when hovering over the

notification tray icon.

Dell P2421DC - Standard

2019/05/03

3:56 PM

NOTE: Dell Display Manager uses DDC/CI channel to communicate with

your monitor. Ensure that DDC/CI is enabled in the menu as below.

DDC/CI

Display

Others

Personalize

Dell 24 Monitor

Brightness / Contrast

Color

Input Source

Display Info

Reset Others

Factory Reset

LCD Conditioning

Service Tag

Firmware

Using The Quick Settings Dialog | 5

Using The Quick Settings Dialog

Clicking Dell Display Manager’s notification tray icon opens the Quick Settings

dialog box. When more than one supported Dell model is connected to the system,

a specific target monitor can be selected using the menu provided. The Quick

Settings dialog box enables convenient adjustment of the monitor’s brightness

and contrast levels. You can select Manual Mode or Auto Mode, and the screen

resolution can be changed.

Dell P2421DC

The Quick Settings dialog box also provides access to Dell Display Manager’s

advanced user interface which is used to adjust Basic functions, configure Auto

Mode and access other features.

6| Using The Quick Settings Dialog

NOTE:

Feature Function Description

Quick DDM Access Quick key to call up

DDM UI.

Ctrl+Shift+D

Use page up/down key or click on “>”

to flip through all Easy Arrange layouts.

Control individual

monitor in multi-

monitor setup

From dropdown box to select monitor,

selected monitor has Dell logo shown.

Move DDM UI to the monitor to be

controlled.

Press Ctrl+Shift+D to bring up the mini

UI under the mouse pointer.

Setting Basic Display Functions | 7

Setting Basic Display Functions

You can select Manual Mode that enables you to manually select a preset mode

or select Auto Mode that applies a preset mode based on the active application.

An on-screen message displays the current preset mode whenever it changes. The

selected monitor’s Brightness and Contrast can also be directly adjusted from the

Basic tab.

Dell P2421DC

NOTE: When multiple Dell monitors are connected, select “Enable

display matrix control” to apply brightness, contrast and color presets

controls to all monitors.

8| Setting Basic Display Functions

Dell P2421DC

Assigning Preset Modes To Applications | 9

Assigning Preset Modes To Applications

The Auto Mode tab enables you to associate a specific Preset Mode with a specific

application, and apply it automatically. When Auto Mode is enabled, Dell Display

Manager will automatically switch to the corresponding Preset Mode whenever

the associated application is activated. The Preset Mode assigned to a particular

application may be the same on each connected monitor, or it can vary from one

monitor to the next.

Dell Display Manager is pre-configured for many popular applications. To add a new

application to the assignment list, simply drag the application from the desktop,

Windows Start Menu or elsewhere, and drop it onto the current list.

NOTE: Preset Mode assignments for batch les, scripts, loaders,

and non-executable les such as zip archives or packed les, are not

supported.

You can also configure the Game preset mode to be used whenever a Direct3D

application runs in full-screen mode. To prevent an application from using mode,

assign a different preset mode to it.

Dell P2421DC

10 | Organizing Windows With Easy Arrange

Organizing Windows With Easy Arrange

On supported Dell monitors, the Easy Arrange tab enables you to easily arrange the

open windows in one of the predefined layouts by dragging them in the zones. Press

“>” or use Page Up/Page Down key to find more layouts. To create a custom layout,

arrange the open windows and then click Save.

To get started with Easy Arrange, choose a target monitor and select one of

the predefined layouts. The regions for that layout are displayed momentarily on

the monitor. Next, drag an open window across the monitor. While the window is

being dragged, the current window layout is displayed and an active region gets

highlighted as the window passes over it. At any time, drop the window into the

active region to place the window in that region.

Dell P2421DC

To create a custom window layout, size and position the windows (maximum 10) on

the desktop and then click the Save link in Easy Arrange. The size and position of

the windows is saved as a custom layout and the custom layout icon is created.

NOTE: This option does not save or remember the applications that are

open. Only the size and position of the windows is saved.

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