Dell S3423DWC User manual [EN]

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Dell S3423DWC

User’s Guide

Monitor Model: S3423DWC Regulatory Model: S3423DWCc

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

2 │

Contents

Safety instructions.......................... 6

About your monitor ..........................7

Package contents . . . . . . . . . . . . . . . . . . . . . . 7

Product features . . . . . . . . . . . . . . . . . . . . . . .9

Identifying parts and controls . . . . . . . . . . . . . . . 11

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Side view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Monitor specifications . . . . . . . . . . . . . . . . . . . 15

Resolution specifications . . . . . . . . . . . . . . . . . . . . . . 17

Supported video modes . . . . . . . . . . . . . . . . . . . . . . . 17

Preset display modes . . . . . . . . . . . . . . . . . . . . . . . . 18

Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . 19

Physical characteristics. . . . . . . . . . . . . . . . . . . . . . . 20

Environmental characteristics . . . . . . . . . . . . . . . . . . . 21

Plug-and-Play capability. . . . . . . . . . . . . . . . . . 22

LCD monitor quality and pixel policy . . . . . . . . . . . 22

Ergonomics. . . . . . . . . . . . . . . . . . . . . . . . . 22

Handling and moving your display. . . . . . . . . . . . . 24

Maintenance guidelines . . . . . . . . . . . . . . . . . . 25

Cleaning your monitor. . . . . . . . . . . . . . . . . . . . . . . .25

│ 3

Setting up the monitor.......................27

Attaching the stand . . . . . . . . . . . . . . . . . . . . 27

Connecting your monitor . . . . . . . . . . . . . . . . . 28

Connecting the USB-C and USB 3.0 cable . . . . . . . . . . . . . 28

Organizing cables . . . . . . . . . . . . . . . . . . . . . 29

Securing your monitor using Kensington lock (optional) 29

Removing the stand . . . . . . . . . . . . . . . . . . . . 30

Wall mounting (optional) . . . . . . . . . . . . . . . . . 31

Operating your monitor ..................... 32

Power on the monitor . . . . . . . . . . . . . . . . . . . 32

Using the control buttons . . . . . . . . . . . . . . . . . 32

Control buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

OSD controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Using the On-Screen Display (OSD) menu . . . . . . . . 35

Accessing the OSD menu . . . . . . . . . . . . . . . . . . . . . . 35

Menu and Power button lock . . . . . . . . . . . . . . . . . . . . 49

OSD warning messages . . . . . . . . . . . . . . . . . . . . . . . 51

Setting the maximum resolution . . . . . . . . . . . . . 54

Setting the KVM switch. . . . . . . . . . . . . . . . . . . . . . .55

Setting the Auto KVM. . . . . . . . . . . . . . . . . . . . . . . .56

Using the tilt and vertical extension. . . . . . . . . . . . 57

Tilt extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Vertical extension . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4 │

Troubleshooting ........................... 58

Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Built-in diagnostics . . . . . . . . . . . . . . . . . . . . 59

Common problems . . . . . . . . . . . . . . . . . . . . . 61

Regulatory information ..................... 65

FCC notices (U.S. Only) and other regulatory information 65

EU product database for energy label and product

information sheet . . . . . . . . . . . . . . . . . . . . . 65

Contacting Dell. . . . . . . . . . . . . . . . . . . . . . . 65

│ 5

Safety instructions

Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your monitor.

NOTE: Before using the monitor, read the safety information that is shipped with your monitor and printed on the product. Keep the documentation at a secure location for future reference.

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.

WARNING: The possible long-term effect of listening to audio at high volume through the headphones (on monitor that support it) may cause damage to your hearing ability.

Place the monitor on a solid surface and handle it carefully. The screen is fragile

• and can be damaged if dropped or hit with a sharp object.

Ensure that your monitor is electrically rated to operate with the AC power

• available in your location.

Keep the monitor in room temperature. Excessive cold or hot conditions can have

• an adverse effect on the liquid crystal of the display.

Connect the power cable from the monitor to a wall outlet that is near and

• accessible. See Connecting your monitor.

Do not place and use the monitor on a wet surface or near water.

• Do not subject the monitor to severe vibration or high impact conditions. For

• example, do not place the monitor inside a car trunk.

Unplug the monitor when it is going to be left unused for an extended period.

• To avoid electric shock, do not attempt to remove any cover or touch the inside

• of the monitor.

Read these instructions carefully. Keep this document for future reference.

• Follow all warnings and instructions marked on product.

Certain monitors can be wall mounted using the VESA mount that is sold

• separately. Ensure to use the correct VESA specifications as mentioned in the

wall mounting section of the User’s Guide.

For information on safety instructions, see the Safety, Environmental, and Regulatory Information (SERI) document that is shipped with your monitor.

6 │ Safety instructions

About your monitor

Package contents

The following table provides the list of components that are shipped with your monitor. If any component is missing, contact Dell. For more information, see

Contacting Dell.

NOTE: Some items may be optional and may not ship with your monitor. Some features may not be available in certain countries.

Component image

Component description

Monitor

Stand riser

Stand base

Power cable (varies by countries)

About your monitor │ 7

Component image

Component description

Super speed USB 3.2 Gen 2 10 Gbps Type-C to Type-C upstream cable (C-C cable) (1 meter)

USB 3.0 upstream cable (enables the USB ports on the monitor)

Quick Setup Guide

• Safety, Environmental, and

• Regulatory Information

8 │ About your monitor

Product features

The Dell S3423DWC monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD), anti-static, and LED backlight. The monitor features include:

86.42 cm (34.0 in.) viewable area display (measured diagonally).

• 3440 x 1440 resolution, with full-screen support for lower resolutions.

• Compatible with (AMD FreeSync), high refresh rates, and a rapid response time

• of 4 ms.

Supports 48 Hz to 100 Hz (HDMI) and 48 Hz to 100 Hz (USB-C Alternate mode

• with DisplayPort 1.4) in Freesync Mode.

Built-in Speaker (5 W) x 2.

• Color gamut of 99% sRGB.

• Supports both Picture by Picture (PBP) / Picture in Picture (PIP) Select Mode.

• Digital connectivity with USB-C and HDMI.

• Single USB-C to supply power (PD 65W) to a compatible notebook while

• receiving video and data signal.

Equipped with 1 USB-C upstream port, 1 Type B upstream port, 1 super speed

• USB 5 Gbps (USB 3.2 Gen 1) Type-A downstream port, and 1 super speed USB 5

Gbps (USB 3.2 Gen 1 with BC1.2) Type-A downstream port.

The built-in KVM switch allows you to control up to 2 computers from a single

• set of keyboard and mouse connected to the monitor.

Supports Auto KVM for multiple input setup.

• Enables user to switch USB KVM function in PBP mode.

• Plug-and-play capability if supported by your computer.

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

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

• mounting holes for flexible mounting solutions.

Tilt and height adjustment capabilities.

• Security-lock slot.

• ≤0.3 W in the Standby Mode

• Dell Display Manager Software included.

• Uses Low Blue Light panel and is compliant with TUV Rheinland (Hardware

• Solution) at factory reset/default setting model (Preset mode: Standard).

Optimize eye comfort with a flicker-free screen.

•

About your monitor │ 9

WARNING: The possible long-term effects of blue light emission from

the monitor may cause damage to the eyes, which includes but is not limited to eye fatigue and digital eye strain. ComfortView Plus feature is designed to reduce the amount of blue light emitted from the monitor to optimize eye comfort.

10 │ About your monitor

Identifying parts and controls

Front view

Control buttons

Label Description Use

1 Function buttons To adjust items in the OSD menu.

(For more information, see Using the

control buttons.)

2 Power On/Off button To turn the monitor on or off.

Solid white light indicates that the monitor is turned on and functioning normally.

Blinking white light indicates that the monitor is in Standby Mode.

About your monitor │ 11

Back view

SVC Tag: 1234567 Express Service Code: 123 456 789 0

S/N: CN-0M2TMK

-TV100-04F-001V

-A00

Date of Mfg/生产日期/生產日期: April. 2020

Q40G034N-700-02A

Flat Panel Monitor /液晶显示器型号: S3421DW

Input Rang /输入电源: 100-240V 50/60Hz,1.6A Made in China /中国制造

DELL S3421DW

Q40G034N-700-01A

DELL S3423DWC

Flat Panel Monitor /Monitor Plano Panel /Moniteur écran plat /液晶顯示器 Model No. /Modelo /N°de modelo /型號: S3423DWCc Input Rang /Entrade /Daya Tegangan:100-240V 50/60Hz,1.6A 輸入電源:交流電壓100-240伏特,1.6安培,50/60赫茲

Consumo de energía en operación: XXX Wh

Удельная мощность рабочего режима - XXX Вт/см² Потребляемая мощность изделием в режиме ожидания - XXX Вт Потребляемая мощность изделием в выключенном режиме - XXX Вт Apparatet må lkoples jordet skkontakt.

Apparaten skall anslutas ll jordat uag. Laite on liiteävä suojakoskemilla varusteuun pistorasiaan. Apparatets skprop skal lslues en skkontakt med jord, som giver forbindelse l skproppens jord. The equipment must be connected to an earthed mains socket-outlet. L'appareil doit être branché sur une prise de courant munie d'une mise à la terre. сделанный в Китай /Fabriqué en Chine /中國製造警語: 使用過度恐傷害視力。 www.dell.com/regulatory_compliance Raheen Business Park Limerick Ireland (for EU Only) CAN ICES-3 (B)/NMB-3(B) This device complies with part 15 of the FCC Rules. Operaon is subject to the following two condions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operaon.

XXXXXXX -XXXXX R-R-TPF-S3421DWc

제조자/신청인:TPV Electronics (Fujian) Co., Ltd.

080-200-3800

R33037 RoHS

IS 13252 (Part 1)/ IEC 60950-1

R-41018660 www.bis.gov.in

For UK only: Cain Road, Bracknell, RG12 1LF

XXXXX

デ

入力:100 V, 1.6 A, 50/60 Hz

XXXXX-XX

Made in China

Back View with monitor stand

Label Description Use

1 Cable management slot Used to organize cables by routing

them through the slot.

2 VESA mounting holes (100 mm

x 100 mm), located behind the VESA cover

Used for wall-mounting the monitor through a VESA-compatible wallmount kit.

3 Regulatory information label Lists the regulatory approvals.

4 Stand release button Releases the stand from the monitor.

5 Regulatory label (including

Barcode serial number and Service Tag label)

Lists the regulatory approvals. Refer to this label if you need to contact Dell for technical support.The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your computer and access warranty information.

12 │ About your monitor

Side view

42 93 107

Bottom view

Bottom view without monitor stand

Label Description Use

1 Security-lock

slot (based on Kensington

Secure your monitor using a security lock (purchased separately) to prevent unauthorized movement of your monitor.

Security Slot)

2 Power connector Connect the power cable (shipped with your monitor).

3 HDMI 1 2.0 port Connect to your computer using an HDMI cable.

4 Stand lock

feature

Lock the stand to the monitor using a M3 x 6 mm screw (screw not included).

5 HDMI 2 2.0 port Connect to your computer using an HDMI cable.

About your monitor │ 13

6 USB-C upstream

port

7 Audio line out

port

8 Super speed USB

5 Gbps (USB 3.2 Gen 1) Type-B upstream port

9 Super speed USB

5 Gbps (USB 3.2 Gen 1) Type-A downstream port (3)

10 Super speed USB

5 Gbps (USB 3.2 Gen 1) Type-A downstream port with Power Charging

Connect the USB-C cable that came with your monitor to the computer or mobile device. This port supports USB Power Delivery, Data, and DisplayPort video signal. The super speed USB 5 Gbps (USB 3.2 Gen

1) Type-C port offers the fastest transfer rate and the alternate mode with DP 1.4 supports a maximum resolution of 3440 x 1440 at 100 Hz, PD 20 V/3.25 A, 15 V/3 A, 9 V/3 A, 5 V/3 A.

NOTE: USB-C is not supported on Windows

versions that were released before Windows

10.

Connect to an external speaker or a sub-woofer (purchased separately).*

Connect the USB cable that came with your monitor to the computer. Once this cable is connected, you can use the USB connectors on the monitor.

Connect your USB device.**

NOTE: To use this port, you must connect

the USB-C cable or USB Upstream Cable (shipped with your monitor) to the USB-C upstream port or the USB Type-B upstream port on the monitor and to your computer.

Connect your USB device** or charge your device

NOTE: To use this port, you must connect

the USB-C cable or USB Upstream Cable (shipped with your monitor) to the USB-C upstream port or the USB Type-B upstream port on the monitor and to your computer.

*Audio line out port does not support headphones.

**To avoid signal interference, when a wireless USB device has been connected to a USB downstream port, it is NOT recommended to connect any other USB devices to the adjacent port(s).

14 │ About your monitor

Monitor specifications

Model S3423DWC

Screen type Active matrix-TFT LCD

Panel type Vertical Alignment

Viewable image

Diagonal

864.2 mm (34.0 in.)

Horizontal, Active Area

Vertical, Active Area

Area

Native resolution and refresh rate

Pixel pitch 0.2318 mm x 0.2318 mm

Pixel per inch (PPI) 109

Viewing angle

Horizontal

Vertical

Luminance output 350 cd/m² (typical)

Contrast ratio 3000 to 1 (typical)

Faceplate coating Anti-glare with 3H hardness

Backlight LED edgelight system

Response time (Gray to Gray)

Color depth 16.7 million colors

Color gamut sRGB CIE 1931 (99%)

797.2 mm (31.19 in.)

333.7 mm (13.14 in.)

266048.26 mm2 (412.38 in.2)

3440 x 1440 at 100 Hz (HDMI 1 and HDMI 2)

3440 x 1440 at 100 Hz (USB-C)

178° (typical)

4 ms (Extreme mode)

5 ms (Fast mode)

8 ms (Normal mode)

About your monitor │ 15

Connectivity 2 x HDMI 2.0 with HDCP 2.2

1 x USB Type -C upstream (Alternate mode with DisplayPort 1.4, Power Delivery PD up to 65 W)*

1 x super speed USB 5 Gbps (USB 3.2 Gen 1) Type-B upstream port

1 x super speed USB 5 Gbps (USB 3.2 Gen 1) downstream port

1 x super speed USB 5 Gbps (USB 3.2 Gen 1) with BC1.2 charging capability at 2 A (maximum)

1 x Audio line out

Bezel width (edge of monitor to active area)

Top

8.64 mm

Left/Right

Bottom

Adjustability

Height adjustable stand

Tilt

Swivel

Slant Adjust

Dell display manager compatibility

Security Security-lock slot (cable lock optional purchase)

*USB-C (Alternate mode with DisplayPort 1.4): HBR3/DisplayPort 1.4/DP audio is supported.

8.65 mm

22.14 mm

100 mm

-5° to 21°

N/A

-4° to 4°

Easy Arrange and other key features

16 │ About your monitor

Resolution specifications

Model S3423DWC

Horizontal scan range 30 kHz to 160 kHz

Vertical scan range 48 Hz to 100 Hz (HDMI)

48 Hz to 100 Hz (USB-C)

Maximum preset resolution

Supported video modes

Model S3423DWC

Video display capabilities (HDMI/USB-C)

3440 x 1440 at 100 Hz (USB-C)

3440 x 1440 at 100 Hz (HDMI)

480p, 480i(HDMI), 576p, 720p, 1080p, 576i(HDMI), 1080i(HDMI)

About your monitor │ 17

Preset display modes

Horizontal

Display Mode

VESA, 640 x 480 31.47 59.94 25.18 -/-

VESA,640 x 480 37.50 75 31.50 -/-

IBM, 720 x 400 31.47 70.08 28.32 -/+

VESA,800 x 600 37.88 60.32 40 +/+

VESA,800 x 600 46.88 75 49.50 +/+

VESA,1024 x 768 48.36 60 65 -/-

VESA,1024 x 768 60.02 75.03 78.75 +/+

VESA,1152 x 864 67.50 75 108 +/+

VESA,1280 x 1024 63.98 60.02 108 +/+

VESA,1280 x 1024 79.98 75.02 135 +/+

VESA,1600 x 900 60 60 108 +/+

VESA,1600 x 1200 75 60 162 +/+

VESA,1680 x 1050 65.29 59.95 146.25 -/+

VESA,1920 x 1080 67.50 60 148.50 +/+

VESA,1920 x 1080 113.22 100 235.50 +/-

VESA,1920 x 1200 74.04 59.95 154 +/-

VESA,2560 x 1080 66.66 60 185.58 +/-

VESA,2560 x 1080 113.24 100 308 +/-

VESA,3440 x 1440 49.99 73.68 265.25 +/-

VESA,3440 x 1440 88.82 59.97 319.75 +/-

VESA,3440 x 1440 150.97 99.98 543.50 +/-

Frequency

(kHz)

Vertical

Frequency

(Hz)

Pixel Clock

(MHz)

Sync Polarity

(Horizontal /

Vertical)

NOTE: This monitor supports AMD FreeSync.

18 │ About your monitor

Electrical specifications

Model S3423DWC

Video input signals HDMI 2.0 (HDCP), 600 mV for each differential line,

100 ohm input impedance per differential pair

USB-C 1.4, 600 mV for each differential line, 100 ohm input impedance per differential pair

AC input voltage/ frequency/current

100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 2.0A (max.)

Inrush current 120 V: 30 A (max.) at 0°C (cold start)

240 V: 60 A (max.) at 0°C (cold start)

Power Consumption 0.3 W (Off Mode)

0.4 W (Standby Mode)

31 W (On Mode)

160 W (max)

32 W (Pon)

100.96 kWh (TEC)

As dened in EU 2019/2021 and EU 2019/2013.

Max brightness and contrast setting with maximum power loading on all USB

ports.

Pon: Power consumption of On Mode measured with reference to Energy Star

test method.

TEC: Total energy consumption in kWh measured with reference to Energy Star

test method.

This document is informational only and reects laboratory performance. Your product may perform dierently, 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.

About your monitor │ 19

Physical characteristics

Model S3423DWC

Signal cable type

Dimensions (with stand)

Height (extended) 489.36 mm (19.27 in.)

Height (compressed) 389.36 mm (15.33 in.)

Width 808.16 mm (31.82 in.)

Depth 217.05 mm (8.55 in.)

Dimensions (without stand)

Height 364.50 mm (14.35 in.)

Width 808.16 mm (31.82 in.)

Depth 64.03 mm (2.52 in.)

Stand dimensions

Height 382.20 mm (15.05 in.)

Width 302 mm (11.89 in.)

Depth 217.05 mm (8.55 in.)

Weight

Weight with packaging 15.21 kg (33.53 lb)

Weight with stand assembly and cables

Weight without stand assembly (no cables)

Weight of stand assembly 3.09 kg (6.81 lb)

Front-frame gloss Black frame 2-4 gloss units

Digital: USB-C, 24 pins

• Universal Serial Bus: USB, 9 pins

•

10.53 kg (23.21 lb)

6.65 kg (14.66 lb)

20 │ About your monitor

Environmental characteristics

Model S3423DWC

Compliant Standards

RoHS-compliant

• BFR/PVC reduce monitor (The circuit boards are made from BFR/PVC-free

• laminates)

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

• Energy Gauge shows the energy level being consumed by the monitor in real

• time.

Temperature

Operating 0°C to 40°C (32°F to 104°F)

Non-operating

Humidity

Operating 10% to 80% (non-condensing)

Non-operating

Altitude

Operating (maximum)

Non-operating (maximum)

Thermal dissipation

Storage: -20°C to 60°C (-4°F to 140°F)

• Shipping: -20°C to 60°C (-4°F to 140°F)

•

Storage 10% to 90% (non-condensing)

• Shipping 10% to 90% (non-condensing)

•

5,000 m (16,400 ft)

12,192 m (40,000 ft)

109.22 BTU/hour (typical)

•

546.07 BTU/hour (maximum)

•

About your monitor │ 21

Plug-and-Play capability

You can install the monitor in any Plug-and-Play compatible computer. The monitor automatically provides the computer 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 necessary. For more information about chang-

ing the monitor settings, see Operating your monitor.

LCD monitor quality and pixel policy

During the LCD Monitor manufacturing process, it is not uncommon 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/pixelguidelines.

Ergonomics

CAUTION: Improper or prolonged usage of keyboard may result in in-

jury.

CAUTION: Viewing the monitor screen for extended periods of time

may result in eye strain.

For comfort and efficiency, observe the following guidelines when setting up and using your computer workstation:

Position your computer so that the monitor and keyboard are directly in front of

• you as you work. Special shelves are commercially available to help you correctly

position your keyboard.

To reduce the risk of eye strain and neck, arm, back, or shoulder pain from using

• the monitor for long period, we recommend you to:

1. Set the distance of the screen between 20 in. to 28 in. (50 cm - 70 cm) from your eyes.

2. Blink frequently to moisten your eyes or wet your eyes with water after prolonged usage of the monitor.

3. Take regular and frequent breaks for 20 minutes every two hours.

4. Look away from your monitor and gaze at a distant object at 20 feet away for at least 20 seconds during the breaks.

5. Perform stretches to relieve tension in the neck, arm, back, and shoulders during the breaks.

22 │ About your monitor

Ensure that the monitor screen is at eye level or slightly lower when you are

• sitting in front of the monitor.

Adjust the tilt of the monitor, its contrast, and brightness settings.

• Adjust the ambient lighting around you (such as overhead lights, desk lamps, and

• the curtains or blinds on nearby windows) to minimize reflections and glare on

the monitor screen.

Use a chair that provides good lower-back support.

• Keep your forearms horizontal with your wrists in a neutral, comfortable position

• while using the keyboard or mouse.

Always leave space to rest your hands while using the keyboard or mouse.

• Let your upper arms rest naturally on both sides.

• Ensure that your feet are resting flat on the floor.

• When sitting, ensure that the weight of your legs is on your feet and not on the

• front portion of your seat. Adjust your chair’s height or use a footrest if necessary

to maintain a proper posture.

Vary your work activities. Try to organize your work so that you do not have to

• sit and work for extended periods of time. Try to stand or get up and walk around

at regular intervals.

Keep the area under your desk clear of obstructions and cables or power cords

• that may interfere with comfortable seating or present a potential trip hazard.

monitor screen at or below eye level

wrists relaxed and at

monitor and keyboard positioned directly in front of the user

feet at on the oor

About your monitor │ 23

Handling and moving your display

To ensure that the monitor is handled safely when lifting or moving it, observe the following guidelines:

Before moving or lifting the monitor, turn off your computer and the monitor.

• Disconnect all cables from the monitor.

• Place the monitor in the original box with the original packing materials.

• Hold the bottom edge and the side of the monitor firmly without applying

• excessive pressure when lifting or moving the monitor.

When lifting or moving the monitor, ensure that the screen is facing away from

• you. Do not press on the display area to avoid any scratches or damage.

When transporting the monitor, avoid any sudden shock or vibration to it.

• When lifting or moving the monitor, do not turn the monitor upside down while

• holding the stand base or stand riser. It may result in accidental damage to the

monitor or cause personal injury.

24 │ About your monitor

Maintenance guidelines

Cleaning your monitor

WARNING: Using improper methods when cleaning the monitor can

result in a physical damage to the screen or the body of your Dell monitor.

CAUTION: Read and follow the Safety instructions before cleaning the

monitor.

WARNING: Before cleaning the monitor, unplug the monitor power

cable from the electrical outlet.

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

• To clean the Dell monitor screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the Dell monitor screen.

CAUTION: Do not use detergents or other chemicals such as benzene,

thinner, ammonia, abrasive cleaners, or compressed air.

CAUTION: Using chemicals for cleaning may cause changes in the ap-

pearance of the monitor, such as color fading, milky film on the monitor, deformation, uneven dark shade, and peeling of screen area.

WARNING: Do not spray the cleaning solution or even water directly

on the surface of the monitor. Doing so will allow liquids to accumulate at the bottom of the display panel and corrode the electronics resulting in permanent damage. Instead, apply the cleaning solution or water to a soft cloth and then clean the monitor.

About your monitor │ 25

NOTE: Monitor damage due to improper cleaning methods and the use of benzene, thinner, ammonia, abrasive cleaners, alcohol, compressed air, detergent of any kind will lead to a Customer Induced Damage (CID). CID is not covered under the standard Dell warranty.

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

• Handle your monitor with care as a dark-colored monitor may get scratched and show white scuff marks more than a light-colored monitor.

• 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.

26 │ About your monitor

Setting up the monitor

Attaching the stand

NOTE: The stand is not installed at the factory when shipped.

NOTE: The following instructions are applicable only for the stand that

was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the setup instructions that were included with the stand.

To attach the monitor stand:

Follow the instructions on the flaps of carton to remove the stand from the

1. top cushion that secures it.

Connect the stand base to the stand riser.

Open the screw handle on the stand base and tighten the screw to secure the

3. stand riser to the stand base.

Close the screw handle.

Slide the tabs on the stand assembly into the slots on the monitor and press

5. the stand assembly down to snap it into place.

Place the monitor upright.

Setting up the monitor │ 27

Connecting your monitor

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

follow the Safety instructions.

NOTE: Dell monitors are designed to work optimally with Dell-

supplied inbox cables. Dell does not guarantee the video quality and performance if non-Dell cables are used.

NOTE: Route the cables through the cable-management slot before

connecting them.

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

NOTE: The images are for the purpose of illustration only. The

appearance of the computer may vary.

To connect your monitor to the computer:

Turn off your computer and disconnect the power cable.

Connect the HDMI or USB-C cable (optional purchase) from your monitor to

2. the computer.

Connect the USB upstream cable (shipped with your monitor) to an

3. appropriate USB 3.0 port on your computer. (See Bottom view for details.)

Connect the USB 3.0 peripherals to the downstream USB 3.0 ports on the

4. monitor.

Connecting the USB-C and USB 3.0 cable

USB-C

Connect the power cables from your computer and monitor into a wall outlet.

USB

28 │ Setting up the monitor

USB-C

USB

Organizing cables

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

Securing your monitor using Kensington lock (optional)

The security-lock slot is located at the bottom of the monitor. (See Security-lock

slot). Secure your monitor to a table using the Kensington security-lock.

For more information on using the Kensington lock (sold separately), see the documentation that is shipped with the lock.

NOTE: The image is for the purpose of illustration only. The appear-

ance of the lock may vary.

Setting up the monitor │ 29

Removing the stand

NOTE: To prevent scratches on the LCD screen when removing the

stand, ensure that the monitor is placed on a soft surface and handle it carefully.

NOTE: The following steps are specifically for removing the stand that

is shipped with your monitor. If you are removing a stand that you purchased from any other source, follow the setup instructions that are included with the stand.

To remove the stand:

Place the monitor on a soft cloth or cushion at the edge of the desk.

Press and hold the stand release button, and then lift the stand off the

2. monitor.

30 │ Setting up the monitor

Wall mounting (optional)

(Screw dimension: M4 x 10 mm).

See the documentation that is shipped with the VESA-compatible wall-mounting kit.

Lay the monitor on a soft cloth or cushion at the edge of the desk.

Remove the stand. See Removing the stand for details.

Remove the four screws that secure the panel to the monitor.

Attach the mounting bracket from the wall mounting kit to the monitor.

To mount the monitor on the wall, see the documentation that is shipped with

the wall-mounting kit.

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

with minimum weight/load-bearing capacity of 26.6 kg.

Setting up the monitor │ 31

Operating your monitor

Power on the monitor

Press the button to turn on the monitor.

Using the control buttons

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

1 52 3 4

32 │ Operating your monitor

Control buttons

The following table describes the control buttons:

Control Buttons Description

Shortcut key/Preset

Modes

Shortcut key/Input

Source

Exit

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

Use the button to adjust the volume. Minimum is ‘0’ (-). Maximum is ‘100’ (+).

Use the Menu button at launch your on-screen display (OSD) and select the OSD menu. See

Accessing the OSD menu.

Use the button to go back to the main menu or exit the OSD main menu.

Use the power button to turn the monitor on or off.

Power On/Off button

(with LED indicator)

Solid white light indicates the monitor is turned on. Blinking white light indicates it is in Standby mode.

Operating your monitor │ 33

OSD controls

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

234

Control Buttons Description

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.

Down

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

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

Back

34 │ Operating your monitor

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 automatically close.

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

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

2. Press the and buttons to move between the setting options. As you move

from one icon to another, the option is highlighted.

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

4. Press the and buttons to select the desired parameter.

5. Press the button and then use the and buttons, according to the

indicators on the menu, to make your changes.

75%

6. Select the button to return to previous menu or the button to accept or

return to previous menu.

Operating your monitor │ 35

Icon Menu and

Submenus Brightness/

Contrast

Brightness Adjusts the brightness of the backlight.

Contrast Adjusts the brightness first, and then adjusts the con-

Description

Uses this menu to adjust the brightness and contrast.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

75%

Presses the button to increase the brightness and presses the button to decrease the brightness (min. 0/ max. 100).

trast only if further adjustment is necessary.

Presses the button to increase the contrast and presses the button to decrease the contrast (min. 0/max. 100).

The Contrast function adjusts the degree of difference between darkness and lightness on the monitor screen.

36 │ Operating your monitor

Icon Menu and

Description

Submenus Input Source Uses the input source menu to select between the

different video signals that may be connected to your monitor.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

USB-C

HDMI 1

HDMI 2

Auto Select

Auto Select for USB-C

Reset Input Source

Prompt for Multiple Inputs

USB-C Selects the USB-C input when you are using the USB-

C connector. Presses the button to select the USB-

C input source.

HDMI 1 Selects HDMI 1 input when you are using the HDMI 1

connector. Presses the button to select the HDMI 1 input source.

HDMI 2 Selects HDMI 2 input when you are using the HDMI 2

connector. Presses the button to select the HDMI 2 input source.

Auto Select Selects Auto Select to scan for available input signals.

Auto Select for USB-C

Selects Auto Select for USB-C to view the following options:

∞ Prompt for Multiple Inputs: Always displays the

Switch to USB-C Video Input message for you to

choose whether to switch or not.

∞ Yes: Always switches to USB-C video input

(without asking) when the USB-C cable is connected.

∞ No: Never automatically switches to USB-C video

input when the USB-C cable is connected.

NOTE: Auto Select for USB-C is available only

when Auto Select is on

Reset Input

Selects this option to restore default Input Source.

Source

Operating your monitor │ 37

Icon Menu and

Submenus Color Changes the color setting mode.

Description

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Preset Modes

Input Color Format

Reset Color

Standard

RGB

Preset Modes

When you select Preset Modes, you can choose Standard, Movie, FPS, RTS, RPG, Warm, Cool, or Custom color from the list.

∞ Standard: Loads the monitor's default color settings.

This is the default preset mode.

∞ Movie: Loads color settings ideal for movies.

∞ FPS: Loads color settings ideal for First-person

Shooter games.

∞ RTS: Loads color settings ideal for Real-time Strat-

egy games.

∞ RPG: Loads color settings ideal for Role-playing

games.

∞ Warm: Increases the color temperature. The screen

appears warmer with a red/yellow tint.

∞ Cool: Decreases the color temperature. The screen

appears cooler with a blue tint.

∞ Custom Color: Allows you to manually adjust the

color settings.

38 │ Operating your monitor

Icon Menu and

Input Color Format

Reset Color

Preset Modes

Hue

Saturation

Reset Color

Submenus Preset

Modes

Description

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

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Preset Modes

Standard

Movie

FPS

RTS

RPG

Warm

Cool

Custom Color

Input Color Format

Allows you to set the video input mode to:

∞ RGB: Selects this option if your monitor is connected

to a computer or a media player that supports RGB output.

∞ YCbCr: Selects this option if your media player sup-

ports only YCbCr output.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Input Color Format

RGB

YCbCr

Operating your monitor │ 39

Icon Menu and

Submenus Hue Uses this feature to adjust the flesh tone color in the

Saturation Adjusts the color saturation of the video image. Uses

Reset Color Resets your monitor's color settings to the factory

Description

video image. Press the or button to adjust the hue from 0 to 100.

Presses the button to increase the green shade of the video image.

Presses the button to increase the purple shade of the video image.

NOTE: Hue adjustment is available only when

you select Movie and Game mode.

the or button to adjust the saturation from 0 to

100.

Presses the button to increase the monochrome appearance of the video image.

Presses the button to increase the colorful appearance of the video image.

NOTE: Saturation adjustment is available only

when you select Movie and Game mode.

settings.

40 │ Operating your monitor

Icon Menu and

Asp

Sha

rpn

essRe

spons

Tim

esetspa

Submenus Display Uses Display to adjust image.

Aspect Ratio Adjusts the image ratio to 21:9 or Auto Resize or 4:3

Sharpness

Response Time

USB-C Prioritization

Description

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Aspect Ratio

Sharpness

Response Time

USB-C Prioritization

Reset Display

21:9

Normal

High Data Speed

or 1:1

Makes the image look sharper or softer. Presses the or button to adjust the sharpness from 0 to 100.

Select the response time: Normal, Fast, or Extreme.

Allows you to specify the priority to transfer the data with high resolution (High Resolution) or high speed (High Data Speed) when using the USB-C port/ USB-C.

Dell 34 Monitor

Brightness/Contrast

InputSource

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

ect Ratio

USB-C Prioritization

High Resolution

High Data Speed

Reset Dis-

Selects this option to restore default display settings.

play

Operating your monitor │ 41

Icon Menu and

Submenus PIP/PBP Allows you to watch more images at the same time.

Description

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

PIP/PBP Mode

O

50% - 50%

75% - 25%

25% - 75%

67% - 33%

33% - 67%

PIP/PBP Mode

Adjusts the PIP/PBP Mode. You can adjust this feature by selecting Off, 50%-50%, 75%-

25%, 25%-75%, 67%-33%, 33%-67%, PIP(Small),PIP(Large).

NOTE: FreeSync is turned off when PIP/PBP

is enabled.

PIP/PBP (Sub)

Selects between USB-C, HDMI 1 or HDMI 2 video signal that may be connected to your monitor for the

PIP/PBP sub-window.

Sub-Window

USB Select

Switch

Main

Window

USB-C

HDMI 1

HDMI 2

USB-C HDMI 1 HDMI 2

Selects to switch between the USB sources in PIP/

PBP Mode.

NOTE: This option is available only when PIP/

PBP Mode is on.

Audio Allows you to set the Audio Main or Sub.

Video Swap Selects to swap videos between main window and sub-

window in PIP/PBP Mode.

Contrast

(Sub)

Adjusts the contrast level of the picture in PIP/PBP Mode.

NOTE: Only applicable when the user turns on

PIP/PBP.

42 │ Operating your monitor

Icon Menu and

Submenus USB

Selection

Audio Change the audio settings.

Description

Allows you to assign the USB upstream port for the input signals (HDMI 1 and HDMI 2), so that the monitor’s USB downstream port (for example, keyboard and mouse) can be used by the current input signals when you connect a computer to either one of the upstream ports. See also Setting the KVM switch for details.

When you use only one upstream port, the connected upstream port is active.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

HDMI 1

HDMI 2

USB-B

USB-C

NOTE: To prevent data damage or loss,

before changing USB upstream ports, make sure that NO USB storage devices are in use by the computer connected to the monitor’s USB downstream port.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

AudioAudio

MenuMenu

PersonalizePersonalize

Others

Volume

Speaker

Reset Audio

Enable

Volume Presses the buttons to adjust the volume. Minimum is

‘0’ (-). Maximum is ‘100’ (+).

Speaker Selects this option to activate the speaker. Reset Audio Selects this option to restore default display settings.

Operating your monitor │ 43

Icon Menu and

Submenus Menu Selects this option to adjust the settings of the OSD,

Language Set the language option for the OSD display: English,

Transparency

Timer OSD hold time: sets the length of time the OSD will

Description

such as the languages of the OSD, the amount of time the menu remains on screen, and so on.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Language

Transparency 20

Timer

Lock

Reset Menu

English

20 s

Disable

Spanish, French, German, Brazilian Portuguese, Russian, Simplified Chinese, or Japanese.

Presses the or button to change the menu transparency (0 to 100).

remain active after the last time you pressed a button.

Presses the or button to adjust the slider in 1 second increments, from 5 to 60 seconds.

Lock Controls user access to adjustments. User can select

one of the following: Menu Buttons, Power Button,

Menu + Power Buttons, Disable.

Reset Menu Resets all OSD settings to the factory preset values.

44 │ Operating your monitor

Icon Menu and

Power Button LED

Shorout Key 2

USB-C Charging

Other USB Charging

Reset Personalization

USB Charging

Power Button LED

USB

Reset Personalization

Shortout Key 1

Submenus Personalize Selects this option to adjust the settings of the person-

Description

alization.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

Personalize

Others

Shorout Key 1

Shorout Key 2

Power Button LED

USB-C Charging

Other USB Charging

Reset Personalization

Preset Modes

Volume

On in On Mode

O in O Mode

O in Standby Mode

Shortcut Key 1

Shortcut Key 2

Selects one of the following: Preset Modes, Brightness/Contrast, Input Source, Aspect Ratio, Volume, PIP/PBP Mode, USB Select Switch, Video Swap to set the Shortcut key 1.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

Personalize

Others

Shorout Key 1

Preset Modes

Brightness / Contrast

Input Source

Aspect Ratio

Volume

PIP/PBP Mode

USB Select Switch

Video Swap

Selects one of the following: Preset Modes, Brightness/Contrast, Input Source, Aspect Ratio, Volume, PIP/PBP Mode, USB Select Switch, Video Swap to set the Shortcut key 2.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

Personalize

Others

Shortout Key 2 Brightness / Contrast

Preset Modes

Input Source

Aspect Ratio

Volume

PIP/PBP Mode

USB Select Switch

Video Swap

Operating your monitor │ 45

Icon Menu and

Shorout Key 1

Shorout Key 2

USB-C Charging

Other USB Charging

Reset Personalization

Submenus Power But-

ton LED

Description

Sets the power LED indicator On In On Mode or Off In On Mode to save energy.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

Personalize

Others

Power Button LED On in On Mode

O in On Mode

USB-C

Charging

Other USB Charging

Reset Personalization

The default setting is Off in Off Mode . Selecting On in Off Mode may automatically charge your note-

book or mobile devices through the USB-C cable even when the monitor is in off mode.

Allows you to enable or disable USB Type-A (Downstream Ports) charging function during monitor standby mode.

Resets all settings under the personalize menu to the default setting.

46 │ Operating your monitor

Icon Menu and

Reset Others

Factory Reset

LCD Conditioning

DDC/CI

Service Tag

Self-Diagnostic

Firmware

Display Info

Reset Others

Factory Reset

LCD Conditioning

Service Tag

Self-Diagnostic

Firmware

Submenus Others Changes the OSD settings, such as the DDC/CI, LCD

Display Info Views the monitor’s current settings.

DDC/CI DDC/CI (display data channel/command interface)

Description

conditioning, and so on.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Dell 34 Monitor Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Display Info

DDC/CI On

LCD Conditioning O

Firmware

Service Tag

Self-Diagnostic

Reset Others

Factory Reset

Display Info

00X000

899VNH3

Model: Dell S3423DWC

Input Source: HDMI 2

Current: 1920x1080, 60Hz 24-bit

PBP Status: O

PIP Status: O

DP Capability: DP 1.4

Link Rate (Current) : -

USB: -

allows your monitor parameters (brightness, color balance and etc.) to be adjusted using the software on your computer.

You can disable this feature by selecting Off.

Enables this feature by selecting On for best user experience and optimum performance of your monitor.

Dell 34 Monitor Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

DDC/CI

O

Operating your monitor │ 47

Icon Menu and

Submenus LCD Condi-

tioning

Firmware Views the firmware version of the display.

Service Tag Views the service tag number of the display. The

SelfDiagnostic

Reset Others

Factory Reset

NOTE: Your monitor has a built-in feature to automatically calibrate

the brightness to compensate for LED aging.

Description

Helps 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.

Service Tag is a unique alphanumeric identifier that allows Dell to identify the product specifications and access warranty information.

NOTE: The Service Tag is also printed on a

label located at the back of the cover.

Allows you to check if your monitor is functioning properly.

Resets all settings under the others setting menu to the factory preset values.

Restores all preset values to the factory default settings.

48 │ Operating your monitor

Menu and Power button lock

Prevents users to access or change OSD menu settings on the display.

By default, the Menu and Power button lock setting is disabled.

1 52 3 4

To access the Lock menu, press and hold the Exit button (button 4) for four seconds. A Lock menu appears at the bottom right corner of the display.

NOTE: The Lock menu can be accessed using this method when the

Menu and Power buttons are in unlocked state.

Dell 34 Monitor

Select option:

To access the Unlock menu, press and hold the Exit button (button 4) for four seconds. An Unlock menu appears at the bottom-right corner of the display.

NOTE: The Unlock menu can be accessed when the Menu buttons are

in locked state.

Dell 34 Monitor

Select option:

Operating your monitor │ 49

There are three lock options.

Menu Description

1 Menu Buttons When Menu Buttons is selected, the OSD menu

settings cannot be changed. All buttons are locked except Power button.

2 Power Button When Power Button is selected, the display cannot

be turned off using the Power button.

3 Menu + Power

Buttons

When Menu + Power Buttons is selected, the OSD menu settings cannot be changed and the Power button is locked.

NOTE: To access the Lock or Unlock menu – Press and hold the Exit

button (button 4) for four seconds.

In the following scenarios, the icon appears at the center of the display:

• When Up button (button 1), Down button (button 2), Menu button (button 3), or Exit button (button 4) are pressed. This indicates the OSD menu buttons are in lock state.

• When the Power button (button 5) is pressed. This indicates the Power button is in lock state.

• When any one of the five buttons are pressed. This indicates OSD menu buttons and the Power button are in lock state.

Unlocking the OSD menu and Power buttons：

1. Press and hold the Exit button (button 4) for four seconds. The Unlock menu appears.

2. Select the Unlock icon to unlock the buttons on the display.

50 │ Operating your monitor

OSD warning messages

When the monitor does not support a particular resolution mode, the following message is displayed:

Dell 34 Monitor

The current input timing is not supported by the monitor display.

Please change your input timing to 3440x1440, 100Hz or any other

monitor listed timing as per the monitor specications.

This means that the monitor cannot synchronize with the signal that it is receiving from the computer. See Monitor specifications for the Horizontal and Vertical frequency ranges addressable by this monitor. Recommended mode is 3440 x

1440. Before the DDC/CI function is disabled, the following message is displayed:

Dell 34 Monitor

The function of adjusting display setting using PC application will be

disabled.

Do you wish to disable DDC/CI function?

Yes

S3423DWC

When the monitor enters the Standby Mode, the following message is displayed:

Dell

P2418HZ

Dell 34 Monitor

Going into Standby Mode.

S3423DWC

Operating your monitor │ 51

If you press any button other than the power button, the following messages are displayed depending on the selected input:

Dell

P2418HZ

Dell 34 Monitor

No HDMI 1 signal from your device.

Press any key on the keyboard or move the mouse to wake it up.

If there is no display, press the monitor button again to select

the correct input source.

S3423DWC

If an HDMI or USB-C cable is not connected, a dialog box as shown below is displayed. The monitor will enter Standby Mode after 4 minutes if left at this state.

Dell

P2418HZ

Dell 34 Monitor

No HDMI 1 Cable

The display will go into Standby Mode in 4 minutes.

www.dell.com/S3423DWC

S3423DWC

Dell

P2418HZ

Dell 34 Monitor

No HDMI 2 Cable

The display will go into Standby Mode in 4 minutes.

52 │ Operating your monitor

www.dell.com/S3423DWC

S3423DWC

Dell

P2418HZ

Dell 34 Monitor

No USB-C Cable

The display will go into Standby Mode in 4 minutes.

www.dell.com/S3423DWC

S3423DWC

The OSD functions only in the normal operation mode. When any button is pressed in the Active-off mode, the following message is displayed:

Dell

P2418HZ

Dell 34 Monitor

No HDMI 1 signal from your device.

Press any key on the keyboard or move the mouse to wake it up.

If there is no display, press the monitor button again to select

the correct input source.

S3423DWC

Activate the computer and the monitor to gain access to the OSD.

See Troubleshooting for more information.

Operating your monitor │ 53

Setting the maximum resolution

NOTE: The steps may vary slightly depending on the version of

Windows you have.

To set the maximum resolution for the monitor:

In Windows 8.1:

3. For Windows 8.1, select the Desktop tile to switch to the Classic desktop.

4. Right-click the desktop and click Screen Resolution.

5. If you have more than one monitor connected, ensure that you select S3423DWC.

6. Click the Screen Resolution drop-down list and select 3440 x 1440.

7. Click OK.

In Windows 10 and Windows 11:

8. Right-click the desktop and click Display settings.

9. If you have more than one monitor connected, ensure to select S3423DWC.

10. Click the Display Resolution drop-down list and select 3440 x 1440.

11. Click Keep changes.

If you do not see 3440 x 1440 as an option, you must update your graphics driver to the latest version. Depending on your computer, complete one of the following procedures:

If you have a Dell desktop or portable computer:

• Go to https://www.dell.com/support, enter your service tag, and download the latest driver for your graphics card.

If you are using a non-Dell computer (laptop or desktop):

• Go to the support site for your computer and download the latest graphic drivers.

• Go to your graphics card website and download the latest graphic drivers.

54 │ Operating your monitor

Setting the KVM switch

The built-in KVM switch allows you to control up to 2 computers from a single set of keyboard and mouse connected to the monitor.

When connecting HDMI + USB-B to computer 1 and USB-C to computer 2, make sure USB for HDMI is assigned to USB-B .

HDMI 2.0

USB

USB-C

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

HDMI 1

HDMI 2

USB-B

USB-C

NOTE: The USB-C connection currently supports video and data

transfer.

NOTE: As the USB-C port supports the USB-C Alternate Mode, there

is no need to set USB for USB-C.

NOTE: When connecting to different video input sources not shown

above, follow the same method to make correct settings for USB to pair the ports.

Operating your monitor │ 55

Setting the Auto KVM

You can follow below instruction to set up Auto KVM for your monitor:

Ensure that PIP/PBP Mode is Off.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

Ensure that Auto Select is On and Auto Select for USB-C is Yes.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

PIP/PBP Mode

USB-C 65W

HDMI 1

HDMI 2

Auto Select

Auto Select for USB-C

Reset Input Source

O

50% - 50%

75% - 25%

25% - 75%

67% - 33%

33% - 67%

O

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

USB-C 65W

HDMI 1

HDMI 2

Auto Select

Auto Select for USB-C

Reset Input Source

Prompt for Multiple Inputs

Yes

Ensure that the USB ports and the video inputs are paired accordingly.

Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

HDMI 1

HDMI 2

USB-B

USB-C

NOTE: For USB-C connection, there is no further setting required.

56 │ Operating your monitor

Using the tilt and vertical extension

NOTE: These values are applicable to the stand that was shipped with

your monitor. To set up with any other stand, see the documentation that shipped with the stand.

Tilt extension

5°

21°

100mm

4°

NOTE: The stand is detached when the monitor is shipped from the

factory.

NOTE: The slant angle of this monitor is between -4° and +4°, not

allowing for pivot movements.

Vertical extension

NOTE: The stand can be extended vertically up to 100 mm.

4°

100mm

Operating your monitor │ 57

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:

Turn off both your computer and the monitor.

Disconnect all video cables from the monitor. This way, the computer does not

2. have to be involved.

Turn on the monitor.

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

Dell

P2418HZ

Dell 34 Monitor

No HDMI 1 Cable

The display will go into Standby Mode in 4 minutes.

www.dell.com/S3423DWC

S3423DWC

(or)

Dell

P2418HZ

Dell 34 Monitor

No USB-C Cable

The display will go into Standby Mode in 4 minutes.

www.dell.com/S3423DWC

S3423DWC

NOTE: This box also appears during normal system operation, if the

video cable is disconnected or damaged.

58 │ Troubleshooting

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

DDC/CI

Display Info

Reset Others

Factory Reset

LCD Conditioning

Service Tag

Firmware

computer and the monitor.

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

Built-in diagnostics

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

1 52 3 4

To run the built-in diagnostics:

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

screen). Press the button (button three) to launch the OSD menu.

Using the front-panel buttons, select Others > Self-Diagnostic to initiate

the self-diagnostic process.

Dell 34 Monitor Dell 34 Monitor

Brightness / Contrast

Input Source

Color

Display

PIP/PBP

USB Selection

Audio

PersonalizePersonalize

Others

When initiated, a gray screen appears. Inspect the screen for abnormalities.

Self-Diagnostic

O

00X000

ABCDEFG

5. Press button 1 on the front-panel. The color of the screen changes to red.

Inspect the screen for abnormalities.

Troubleshooting │ 59

6. Repeat step 5 and inspect the screen when it displays the green, blue, black, and white colors, followed by onscreen text.

The test is complete when the onscreen text appears. To exit, press the front-

7. panel buttons again.

If you do not detect any screen abnormalities upon using the Built-in diagnosticstool, the monitor is functioning properly. Check the video card and computer.

60 │ Troubleshooting

Common problems

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

Common Symptoms

No video or vower LED off

No video or power LED on

Poor focus

Shaky or jittery Video• Reset the monitor to factory settings (Factory Reset).

Missing pixels

Possible Solutions

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 using

• the Input Source menu.

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 using

• the Input Source menu.

Eliminate video extension cables.

• Reset the monitor to factory settings (Factory Reset).

• Change the video resolution to the correct aspect ratio.

•

Check environmental factors.

• Relocate the monitor, and test in another room.

• 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.

Troubleshooting │ 61

Common Symptoms

Stuck-on pixels

Brightness problems• Reset the monitor to factory settings (Factory Reset).

Geometric distortion• Reset the monitor to factory settings (Factory Reset).

Horizontal or vertical Lines

Synchronization problems

Safety-related issues• Do not perform any troubleshooting steps.

Intermittent problems

Possible Solutions

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

Adjust brightness & contrast controls using OSD.

•

Adjust horizontal & vertical controls using OSD.

• 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.

• 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 the safe mode.

•

Contact Dell immediately.

• Ensure that the video cable connecting the monitor to

• the computer is connected properly and is secure.

Reset the monitor to factory settings (Factory Reset).

• Perform monitor self-test feature check to determine if

• the intermittent problem occurs in self-test mode.

62 │ Troubleshooting

Common Symptoms

Missing color

Wrong color

Image retention from a static image left on the monitor for a long period of time

Video ghosting or overshooting

Possible Solutions

Perform monitor self-test feature check.

• Ensure that the video cable connecting the monitor to

• the computer is connected properly and is secure.

Check for bent or broken pins in the video cable

• connector.

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 YCbCr in

• the Color settings OSD.

Run the built-in diagnostics.

• Set the screen to turn off after a few minutes of screen

• idle time. These can be adjusted in Windows Power

Options or Mac Energy Saver setting.

Alternatively, use a dynamically changing screensaver.

• Change the Response Time in the Display OSD to

• Normal, Fast or Extreme depending on your application

and usage.

Troubleshooting │ 63

Product-specific problems

Specific Symptoms

Screen image is too small

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

Possible Solutions

Check the Aspect Ratio setting in the Display settings

• OSD.

Reset the monitor to factory settings (Factory Reset).

• Turn off the monitor, unplug the power cord, plug it back,

• and then turn on the monitor.

Check if the OSD menu is locked. If yes, press and hold

• the menu button for six seconds to unlock.

Check the signal source. Ensure that 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.

•

64 │ Troubleshooting

Regulatory information

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.

EU product database for energy label and product information sheet

S3423DWC: https://eprel.ec.europa.eu/qr/1107221.

Contacting Dell

To contact Dell for sales, technical support, or customer service issues, see www.

dell.com/contactdell.

NOTE: Availability varies by country and product, and some services

may not be available in your country.

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.

Regulatory information │ 65

Dell S3423DWC User manual [EN]

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety instructions

About your monitor

Package contents

Product features

Identifying parts and controls

Front view

Back view

Side view

Bottom view

Monitor specifications

Resolution specifications

Supported video modes

Preset display modes

Electrical specifications

Physical characteristics

Environmental characteristics

Plug-and-Play capability

LCD monitor quality and pixel policy

Ergonomics

Handling and moving your display

Maintenance guidelines

Cleaning your monitor

Setting up the monitor

Attaching the stand

Connecting your monitor

Connecting the USB-C and USB 3.0 cable

Organizing cables

Securing your monitor using Kensington lock (optional)

Removing the stand

Wall mounting (optional)

Operating your monitor

Power on the monitor

Using the control buttons

Control buttons

OSD controls

Using the On-Screen Display (OSD) menu

Accessing the OSD menu

Menu and Power button lock

OSD warning messages

Setting the maximum resolution

Setting the KVM switch

Setting the Auto KVM

Using the tilt and vertical extension

Tilt extension

Vertical extension

Troubleshooting

Self-test

Built-in diagnostics

Common problems

Regulatory information

FCC notices (U.S. Only) and other regulatory information

EU product database for energy label and product information sheet

Contacting Dell