DELL S2421NX User Manual

Dell S2421HN/S2421NX/S2721HN/  
S2721NX  
Dell Display Manager  
User’s Guide  
Model: S2421HN/S2421NX/S2721HN/S2721NX  
Regulatory model: S2421Ht/S2721Ht  
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. . . . . . . . . . . . . . . . . 11  
Managing Multiple Video Inputs. . . . . . . . . . . . . . . . . . . . . . . 15  
Restoring Application Positions . . . . . . . . . . . . . . . . . . . . . . . 17  
Applying Energy Conservation Features . . . . . . . . . . . . . . . . 18  
Other Shortcut Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Attach DDM To Active Window (Only Windows 10) . . . . . . . .20  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Contents  
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Overview  
Dell Display Manager is a Microsoft Windows application used to manage a display or a group of  
displays. It enables manual adjustment of the displayed image, assignment of automatic settings,  
energy management, window organization, image rotation, and other features on selected Dell  
displays. After installed, Dell Display Manager runs each time the system starts and places its  
icon in the notification tray. Information about displays connected to the system is available when  
hovering over the notification-tray icon.  
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NOTE: Dell Display Manager uses DDC/CI channel to communicate with your  
display. Ensure that DDC/CI is enabled in the menu as below.  
Dell 24/27 Monitor  
Brightness/Contrast  
Input Source  
Color  
Display Info  
DDC/CI  
On  
Oꢀ  
LCD Conditioning  
Firmware  
Display  
Menu  
Service Tag  
Personalize  
Reset Others  
Factory Reset  
Others  
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Overview  
Using the Quick Settings Dialog  
Clicking Dell Display Manager’s notification tray icon to open the Quick Settings dialog box.  
When more than one supported Dell displays are connected to the computer, a specific target  
display can be selected using the menu. The Quick Settings dialog box enables convenient  
adjustment of the display’s brightness, contrast, resolution, window layout, and so on. You can  
select Manual Mode or Auto Mode, and the screen resolution can be changed.  
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Using the Quick Settings Dialog  
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The Quick Settings dialog box also provides access to Dell Display Manager’s advanced user  
interface that is used to adjust basic functions, configure auto mode and access other features.  
NOTE:  
Feature  
Function  
Description  
Quick DDM  
Access  
Quick key to  
call up DDM UI  
Ctrl+Shift+D  
Use Page Up/Page Down key or click on “>” to flip  
through all Easy Arrange layouts.  
Control  
From dropdown box to select display, selected display  
has Dell logo shown.  
Perform display self-test feature check.  
Move DDM UI to the display to be controlled.  
Press Ctrl+Shift+D to bring up the miniUI under the  
mouse pointer.  
individual  
display in  
multiple  
display setup  
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Using the Quick Settings Dialog  
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 display’s Brightness and  
Contrast can also be directly adjusted from the Basic tab.  
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NOTE: When multiple Dell displays are connected, select “Enable display matrix  
control” to apply brightness, contrast and color presets controls to all displays.  
Setting Basic Display Functions  
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Setting Basic Display Functions  
Assigning Preset Modes to Applications  
The Auto Mode tab allows you to associate a specific Preset Mode with a specific application,  
and apply it automatically. When Auto Mode is enabled, Dell Display Manager automatically  
switches 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  
display, or it can vary from one display to another.  
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 files, scripts, loaders, and non-  
executable files such as zip archives or packed files, 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.  
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Assigning Preset Modes to Applications  
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Assigning Preset Modes to Applications  
Organizing Windows with Easy Arrange  
Easy Arrange helps you to effectively organize your application windows on the desktop. You  
first choose a pre-defined layout pattern which suits your work, then you just need to drag the  
application windows into the defined 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.  
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Organizing Windows with Easy Arrange  
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For Windows 10, you can apply different window layouts for each of the virtual desktops.  
If you often use Windows snap feature, you can select “Hold down the SHIFT key to enable  
zone positioning. This gives Windows snap priority over Easy Arrange. You will then need to  
press the Shift key to use Easy Arrange positioning.  
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Organizing Windows with Easy Arrange  
If you are using multiple displays in an array or matrix, Easy Arrange layout can be applied  
across to all the displays as one desktop. Select “Span multiple monitors” to enable this  
feature. You need to align your displays properly to make it effective.  
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Organizing Windows with Easy Arrange  
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There are other advanced ways for the usage of Easy Arrange. Refer to table below.  
Feature  
Function  
Description  
Enhanced  
Easy Arrange  
Custom layouts Save and name 5 customized Easy Arrange patterns.  
Configure x*y patterns.  
5 MRU (most-  
recently-used)  
layouts  
Press Ctrl+Shift+Home to cycle among the last 5 MRU  
layouts.  
On the fly parti- Hold down Ctrl while resizing current Easy Arrange  
tion resizing  
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 default layout.  
Easy Arrange  
layouts for  
Portrait mode Easy Arrange icons are presented when  
display is rotated.  
portrait mode  
NOTE: Some application requires a minimum effective resolution for its window.  
The application may not fit in an Easy Arrange zone if the zone is smaller than the  
required window size.  
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Organizing Windows with Easy Arrange  
Managing Multiple Video Inputs  
The Input Manager tab provides convenient ways for you to manage multiple video inputs  
connected to your Dell display. It makes it very easy to switch between inputs while you work  
with multiple computers.  
All video input ports available to your display are listed. You can give each input a name as you  
like. Please save your 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.  
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HDMI  
HDMI  
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Managing Multiple Video Inputs  
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You can use the dropdown list to switch to any input source.  
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NOTE: DDM communicates with your display even when the display 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 display.  
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Managing Multiple Video Inputs  
Restoring Application Positions  
DDM can help you restore application windows into their positions when you reconnect your  
computer to the display(s). You can quickly access to this feature by right-clicking on 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 display(s).  
If you want to go back to a favorite layout after you have moved the application windows  
around, you can first “Save current window layout” and later “Restore saved window  
layout.  
You may use displays with different models or resolutions in your daily routine, and you may apply  
different window layouts on them. DDM is able to know the display you have reconnected and  
restore application positions accordingly.  
In case you need to replace a display in a display matrix configuration, you can save the window  
layout before replacement and restore the layout after a new display is installed.  
NOTE: You should keep your applications running in order to benefit from this  
feature. DDM doesn’t launch applications.  
Restoring Application Positions  
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Applying Energy Conservation Features  
On supported Dell models, an Options tab is available that provides PowerNap energy  
conservation options. You can choose to set the display’s brightness to the minimum level, or to  
put the display to sleep when the screensaver is activated.  
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Applying Energy Conservation Features  
Other Shortcut Keys  
Shortcut keys can be defined for below operations, you can define the shortcut keys for quick  
access to perform these operations:  
Program shortcut key: to quickly open the Quick Settings dialog box.  
Easy Arrange MRU shortcut key: to quickly apply the 5 recently used window layouts.  
Application window shortcut key: to launch a quick menu for options under Auto Mode  
and Easy Arrange.  
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Ctrl + Shift + Num 2  
Ctrl + Shift + Num 4  
Ctrl + Shift + Num 3  
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Ctrl + Shift + Num 2  
Ctrl + Shift + Num 4  
Ctrl + Shift + Num 3  
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Other Shortcut Keys  
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Attach DDM To Active Window (Only Windows  
10)  
DDM icon can be attached to the active window you are working on. Click on the icon for easy  
access to below features.  
Feature  
Function  
Description  
Attach DDM to Change preset or  
Active Window snap to different  
(only Windows partitions  
10)  
DDM icon attached to active window and user can  
easily switch windowposition, change color preset  
mode, and associate auto preset mode.  
Shortcut key trigger On a running app window, press Ctrl+Shift+Ins also  
triggers the attached DDM menu.  
Move app window  
among Easy Ar-  
range cells  
Send the app window to previous/next Easy Ar-  
range cell.  
Move app window  
among displays  
Send the app window to previous/next display.  
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Attach DDM To Active Window (Only Windows 10)  
Troubleshooting  
If DDM does not work with your display, DDM will show below icon in your notification tray.  
Click on the icon, DDM shows a more detailed error message.  
Please note that DDM only works with Dell branded displays. If you are using displays from other  
manufacturers, DDM doesn’t support them.  
If DDM is unable to detect and/or communicate with a supported Dell display, please take below  
actions to troubleshoot:  
1. Make sure the video cable is properly connected to your display and your computer.  
especially the connectors should be firmly inserted into position.  
2. Check the display OSD to ensure DDC/CI is enabled.  
3. Make sure you have the correct and latest display driver from the graphics vendor (Intel,  
AMD, NVidia, etc.). Display driver is often the cause of DDM failure.  
4. Remove any docking stations or cable extenders or converters between the display and  
the graphics port. Some low-cost extenders, hubs or converters may not support DDC/  
CI properly and can fail DDM. Update the driver of such device if the latest version is  
available.  
5. Restart your computer.  
Troubleshooting  
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DDM may not work with below displays:  
Dell display models earlier than year 2013 and D-series of Dell displays. For more  
Gaming displays using Nvidia-based G-sync technology  
Virtual and wireless displays do not support DDC/CI  
Some early models of DP 1.2 displays, it may be necessary to disable MST/DP 1.2 using  
the display OSD  
If your PC is connected to the Internet, you will be prompted to upgrade to a newer version of  
DDM when it is available. It is recommended to download and install the latest DDM application.  
You may also check for new version by right clicking on DDM icon while pressing and holding  
‘shift’ key.  
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Troubleshooting  

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