Dell S3423DWC User manual

Model: S3423DWC
Regulatory model: S3423DWCc
Dell S3423DWC
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.
Copyright © 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks
are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective
owners.
2022 – 03
Rev. A00

Contents | 3
Contents
Overview ....................................................... 4
Using the Quick Settings dialog box................. 5
Setting basic display options........................... 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 the active window................... 16
Setting energy conservation options............... 17
Other shortcut keys ...................................... 18
Troubleshooting............................................ 19

4| Overview
Overview
Dell Display Manager(DDM) is an application that allows users to configure their
supported Dell monitor settings such as brightness, contrast, and preset modes.
After its installation, DDM is accessible from the notification tray. Information about
monitors connected to the system is available when the mouse is hovered over the
notification-tray icon.
S3423DWC
NOTE: DDM uses Display Data Channel Command Interface (DDC/
CI) channel to communicate with your monitor. Ensure that DDC/CI is
enabled in the menu as shown in the following image:
Dell 34 Monitor
Display
Dell 34 Monitor
Input Source
Color
Menu
Audio
Menu
PersonalizePersonalize
Audio
PIP/PBP
USB Selection
Others
Brightness / Contrast
DDC/CI
O
On
Display Info
Reset Others
Factory Reset
LCD Conditioning
Service Tag
Self-Diagnostic
Firmware

Using the Quick Settings dialog box | 5
Using the Quick Settings dialog box
When you click the DDM icon in the notification tray, the Quick Settings window is
displayed.
If more than one supported Dell monitor is connected to the computer, a specific
target monitor can be selected from the Display drop-down list.
In the Quick Settings dialog box, you can also change the following:
* Resolution
* Auto Mode or Manual Mode
* Brightness and contrast levels
* Easy Arrange window layouts for the monitor
In the Quick Settings dialog box, you can also click Open Dell Display Manager
for more advanced settings.

6| Using the Quick Settings dialog box
NOTE:
Feature Function Description
Quick DDM Access Shortcut key to
open the DDM UI.
Ctrl+Shift+D
Control individual
monitor in a multi-
monitor setup
In the drop-down list with monitors, the
currently selected monitor has the Dell
logo next to it.
Move DDM UI to the monitor to be
controlled.
Press Ctrl+Shift+D to open the mini UI
under the mouse pointer.

Setting basic display options | 7
Setting basic display options
You can select Manual Mode to manually select a preset mode or select Auto
Mode to apply 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 levels can also be directly adjusted in the Basic
tab.
NOTE: When multiple Dell monitors are connected, select “Enable
display matrix control” to apply brightness, contrast, and color presets
to all monitors.

8| Setting basic display options

Assigning preset modes to applications | 9
Assigning preset modes to applications
The Auto Mode tab enables you to associate a Preset Mode with a specific
application, and apply it automatically. When Auto Mode is enabled, DDM 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
other.
DDM is preconfigured for many popular applications. To add a new application to the
Application list, simply drag the application from the desktop, Windows Start menu
or elsewhere, and drop it onto the current list.
NOTE: Preset Mode assignments are not supported for batch les,
scripts, loaders, and non-executable les such as zip archives or packed
les.
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.

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 into 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.
To create a custom window layout, set the size and position the windows on the
desktop and then click the Save link in Easy Arrange. The size and position of the
windows are 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 are saved.

Organizing windows with Easy Arrange | 11
To use the custom layout, select the custom layout icon. To delete the currently
saved custom layout, close all windows on the desktop and then click the Save link
in Easy Arrange.

12 | Organizing windows with Easy Arrange
The following table describes the additional features of Easy Arrange.
Feature Function Description
Enhanced Easy
Arrange
Custom layouts Save and name five customized Easy
Arrange patterns.
Configure x*y patterns.
Six MRU (most-
recently-used)
layouts
Press Ctrl+Shift+Home to toggle
among the last six MRU layouts.
On the fly partition
resizing
Hold down Ctrl while resizing the
current Easy Arrange layout to adjust
the size and numbers of cells in a layout.
Newly formed Easy Arrange pattern
is saved into the Easy Arrange icon
position.
Hold down Ctrl while clicking on a
modified layout icon to restore it to the
default layout.
Easy Arrange
layouts for portrait
mode
Portrait mode Easy Arrange icons are
presented when the monitor is rotated.
NOTE: An application may require a minimum effective resolution for its
application window. Such an application may not fit in an Ease Arrange
zone if the zone is smaller than the required window size.

Managing multiple video inputs | 13
Managing multiple video inputs
The Input Manager tab enables you to manage multiple video inputs connected to
your Dell monitor. It enables you to easily switch between inputs while you work with
multiple computers.
All video input ports available to your monitor are listed. You can name each input as
per your requirement and save changes after editing.
You can define a shortcut key to quickly switch to your favorite input and another
shortcut key to quickly switch between two inputs if you often work between them.
NOTE: DDM communicates with your monitor even when the monitor
is displaying video from another computer. You can install DDM on the
computer you frequently use and control input switching from it. You
may also install DDM on other computers connected to the monitor.

14 | Restoring application positions
Restoring application positions
DDM can help you restore application windows into their positions when you
reconnect your computer to the monitor(s). You can quickly access this feature by
right-clicking on the DDM icon in the notification tray.
If you choose Auto-restore window layout, your application windows’ positions
are tracked and remembered by DDM. DDM automatically puts the application
windows into their original positions when you reconnect your computer to your
monitor(s).

Restoring application positions | 15
If you want to go back to a favorite layout after you have moved the application
windows around, you can first select Save current window layout and later
Restore saved window layout.
You may use monitors with different models or resolutions in your daily routine,
and you may apply different window layouts on them. DDM is able to know the
monitor you have reconnected and restore application positions accordingly. In case
you need to replace a monitor in a monitor matrix configuration, you can save the
window layout before replacement and restore the layout after a new monitor is
installed.
NOTE: You should keep your applications running in order to benefit
from this feature. DDM does not launch applications.

16 | Attach DDM to the active window
Attach DDM to the active window
The DDM icon can be attached to the active window you are working on. Click the
DDM icon to easily access the following features.
Feature Function Description
Attach DDM to
Active Window
Change preset or
snap to different
partitions
The DDM icon can be attached to
the active window, and you can easily
switch window position, change color
preset mode, and associate auto preset
mode.
Shortcut key trigger On a running application window, press
Ctrl+Shift+Ins to open the attached
DDM menu.
Move application
window among
Easy Arrange cells
Send the application window to
previous/next Easy Arrange cell.
Move application
window among
monitors
Send the application window to
previous/next monitor.

Setting energy conservation options | 17
Setting energy conservation options
On supported Dell monitor models, the Options tab is available for selecting
PowerNap energy conservation options. You can set the monitor’s brightness to
the minimum level or put the monitor to sleep when the screensaver is activated.

18 | Other shortcut keys
Other shortcut keys
Shortcut keys can be defined for the following operations:
• Program shortcut key: To quickly open the Quick Settings dialog box.
• Easy Arrange MRU shortcut key: To quickly apply the five recently used
window layouts.
• Application window shortcut key: To launch a quick menu for options under
Auto Mode and Easy Arrange.

Troubleshooting | 19
Troubleshooting
DDM only works with supported Dell monitors. DDM does not support monitors
from other manufacturers. If DDM cannot work with your monitor, the following icon
is displayed in the notification tray.
2021/11/1
10:17 AM
When the icon is clicked, DDM shows a more detailed error message.
If DDM is unable to detect and/or communicate with a supported Dell monitor,
perform the following:
1. Ensure that the video cable is properly connected to your monitor and your
computer. The connectors must be firmly inserted into position.
2. Check the monitor OSD to ensure DDC/CI is enabled.
3. Ensure you have the correct and latest graphics-card driver from your graphic-
card manufacturer such as Intel, AMD, and NVIDIA. Incompatible or old version
of graphics-card driver causes DDM to fail.

20 | Troubleshooting
4. Remove any docking stations or cable extenders or converters between the
monitor and the graphics port. Some low-cost extenders, hubs, or converters
may not support DDC/CI properly and may cause DDM to fail. Update the
driver of such device to the latest version.
5. Restart your computer.
DDM may not work on the following monitors:
• Dell monitor models from 2013 or earlier and D-series of Dell monitors. For
more information, see https://www.dell.com/support/monitors.
• Gaming monitors using Nvidia-based G-sync technology.
• Virtual and wireless displays do not support DDC/CI.
• Earlier models of monitors with DisplayPort version 1.2. You may need to
disable MST/DP 1.2 using the OSD menu on the monitor.
If your computer is connected to the Internet, you are prompted to upgrade to a
newer version of DDM when it is available. It is recommended to download and
install the latest DDM version.
You can manually check for a new version by right-clicking the DDM icon while
pressing and holding the Shift key.