Dell 34 Curved WQHD - S3423DWC

Limited Time:
Includes 6 months of The Disney Bundle.* Must be 18+ to subscribe. Auto-renews at then-current monthly price (currently, $13.99/mo, subject to change w/ notice). See Terms

Tech Specs

Quick Specs

Device Type
LED-backlit LCD monitor - 34"
USB 3.2 Gen 1 hub
Panel Type
Aspect Ratio
Native Resolution
WQHD 3440 x 1440 at 100 Hz
Pixel Pitch
0.2318 mm
300 cd/m²
Contrast Ratio
3000:1 / 3000:1 (dynamic)
Response Time
4 ms (gray-to-gray extreme)
Color Support
16.7 million colors
Input Connectors
2xHDMI, DisplayPort, USB-C
Display Position Adjustments
Height, tilt
Screen Coating
Anti-glare 3H hardness
Dimensions (WxDxH) - with stand (lowest position)
31.8 in x 8.5 in x 15.3 in
Compliant Standards
RoHS, BFR-reduced, PVC-reduced
Diagonal Size
14.7 lbs


Display Type
LED-backlit LCD monitor / TFT active matrix
Diagonal Size
Curved Screen
Yes (1800R)
Adaptive-Sync Technology
AMD FreeSync
Built-in Devices
USB 3.2 Gen 1 hub
Panel Type
Aspect Ratio
Native Resolution
WQHD 3440 x 1440 at 100 Hz
Pixel Pitch
0.2318 mm
Pixel Per Inch
300 cd/m²
Contrast Ratio
3000:1 / 3000:1 (dynamic)
Color Support
16.7 million colors
Color Gamut
99% sRGB
Response Time
4 ms (gray-to-gray extreme)
Horizontal Viewing Angle
Vertical Viewing Angle
Screen Coating
Anti-glare 3H hardness
Backlight Technology
LED backlight
Mercury free, arsenic-free glass, 3-sided bezeless
Dimensions (WxDxH)
31.8 in x 8.5 in x 15.3 in - with stand (lowest position)


  • 2 x HDMI (HDCP 2.2)
  • USB-C upstream/DisplayPort 1.4 Alt Mode with Power Delivery (power up to 65W)
  • USB 3.2 Gen 1 upstream (Type B)
  • USB 3.2 Gen 1 downstream (Type A)
  • USB 3.2 Gen 1 downstream with Battery Charging 1.2
  • Audio line-out


Display Position Adjustments
Height, tilt
Tilt Angle
Height Adjustment
3.9 in
VESA Mounting Interface
100 x 100 mm


VESA interface support
Cables Included
  • 1 x USB-C to USB-C cable
  • 1 x USB 3.2 Gen 1 upstream cable
Compliant Standards
RoHS, BFR-reduced, PVC-reduced


Input Voltage
AC 100-240 V (50/60 Hz)
Power Consumption (On mode)
31 W
Power Consumption (Typical)
160 Watt
Power Consumption Stand by
0.4 Watt
Power Consumption (Off Mode)
0.3 Watt
On / Off Switch

Dimensions & Weight

Dimensions & Weight Details
  • With stand (lowest position) - width: 31.8 in - depth: 8.5 in - height: 15.3 in
  • With stand (highest position) - width: 31.8 in - depth: 8.5 in - height: 19.3 in
  • Without stand - width: 31.8 in - depth: 2.5 in - height: 14.4 in - weight: 14.7 lbs

Dimensions & Weight (Shipping)

Shipping Weight
33.53 lbs

Manufacturer Warranty

Service & Support
Limited warranty - 1 year - response time: next business day
Bundled Services
1-Year Advanced Exchange Service and Premium Panel Exchange

Environmental Parameters

Min Operating Temperature
32 °F
Max Operating Temperature
104 °F
Humidity Range Operating
10 - 80% (non-condensing)


Protect your purchase
You do everything on your PC, so keep it safe by upgrading your support plan to Premium Support.

Help Me Choose: PC support options

Help Me Choose: Monitor and Docking Station support options

Basic Support
Premium Support

Best Selling Accessories

Check out our recommended products and deals. Here is everything you need to get started with your Monitor

Dell 34 Curved WQHD - S3423DWC

Est. Value
Dell Price
back in rewards
Product ID



Picture of two Dell S3423DWC Monitors, one showing the front of the product and the other showing the back

Immersive views with incredible clarity

Expand your field of vision: The ultrawide WQHD (3440 x 1440) curved 1800R screen with a 21:9 aspect ratio offers a wrap-around view for a more immersive viewing in incredible clarity and fine detail.

See amazing colors:
This Vertical Alignment (VA) display technology’s expanded contrast ratio of 3000:1 together with 99% sRGB lets you see rich colors, greater depth and a wider range of shades.

Designed with comfort in mind:
Optimize eye comfort with ComfortView Plus—an always on, built-in low blue light screen that reduces blue light emissions while delivering excellent color.

Picture of a Dell S3423DWC Monitor with a nature landscape on the screen background
Picture of a Dell S3423DWC Monitor connected to a Dell laptop, desktop, keyboard, and mouse, and charging a cellphone

Seamlessly switch between work and play

Easy, effortless multitasking: The built-in Keyboard Video Mouse (KVM), Picture-in-Picture (PIP) and Picture-by-Picture (PBP) allow for a single keyboard and mouse to easily switch between PCs so you can manage two inputs at once.

Everything in order: The Dell Easy Arrange feature lets you organize multiple applications on your screen and snap them into a template of your choice quickly and easily.

Support versatility usage: Easily switch between up to 3 connected devices with the built-in dual HDMI ports automatically supporting the audio of the chosen source. Connect to the Notebook via USB-C or a gaming console and streaming dongle via HDMIs.

Perfect for casual gaming: AMD FreeSync™ eliminates screen tearing and stutter for smooth gameplay with up to 100Hz refresh rate.

Ease and Comfort: Stay comfortable while using this monitor for work, entertainment or casual gameplay with adjustability features that allow you to tilt and raise your monitor to your liking. 

Impressive connectivity

A clutter-free desk set up: The single-cable USB-C solution keeps your office space clear by combining video, audio, data transmission, and 65W Power Delivery into one cord. Focus on what’s important and simply switch between your working Notebook and personal Desktop or Notebook. 

Quick and convenient access: Two USB ports, including one quick-access port that support up to 10W charging always within your reach.
Picture of a Dell S3423DWC Monitor on its back showing the ports available behind the product
Picture of a Dell S3423DWC Monitor with a email inbox on the left side of the screen and a search bar on the right side

Designed to fit your lifestyle

Stunning, minimalist design: The textural intrigue of the back panel compliments every home office with its beautiful silver pattern. 

Crisp audio: Elevate your home office and home entertainment set up with a monitor that has dual 5W speakers. 

Seamless view: Experience fewer distractions with an improved viewable screen-to-body ratio and three-sided, ultra-thin bezels. 

Secure in place: Easily affix the monitor to a wall with the VESA-compatible mount.

Environmentally conscious features

Reducing waste: We’ve reduced our manufacturing impact on the environment with this monitor, which contains at least 25% post-consumer recycled plasticsi and is shipped Styrofoam-free, all in packaging made of at least 75% recycled cardboard.

Energy conservation: Save energy when your monitor is not in use with PowerNapi, a feature that dims or puts your monitor to sleep when it’s not in use.
Advancing sustainability: Dell Technologies is committed to reducing environmental impact throughout the product lifecycle. Read more about our commitment to sustainability and our 2030 Social Impact goals here.

Picture of a Dell S3423DWC Monitor with colorful leaves on the screen
Picture of Dell S3423DWC Monitor with the screen down and numbers from 1 to 10 showing the ports available below the product

Connectivity Options

Ports and Slots: 
1. Security-lock slot (based on Kensington Security Slot™)
2. Power connector
3. HDMI 2.0 port with HDCP 2.2 (2)
4. Stand lock feature
5. USB Type-C upstream port (Alternate mode with DisplayPort 1.4, Power Delivery up to 65 W)

6. Audio line out port
7. Super Speed USB 5 Gbps (USB 3.2 Gen1) Type-B upstream port
8. Super Speed USB 5 Gbps (USB 3.2 Gen1) Type-A downstream port
9. 5W Speakers (2)
10. Super Speed USB 5 Gbps (USB 3.2 Gen1) Type-A downstream port with 10W Power Charging

Cables included: 
1. Power Cable
2. USB-C to USB-C Cable (USB 3.2 Gen 1 Type C™-DP/PowerDelivery)
3. Super Speed USB 5 Gbps (USB 3.2 Gen 1) Type-B upstream cable

Peace of mind, guaranteed

Our products are engineered with care and precision, so we guarantee support and peace of mind.
Dell Service Illustration - Reliable Brand - Trophy

A brand you can rely on

As No.1 monitor company worldwide for eight consecutive years (2013, Q2 to 2021, Q3)i, we take pride in our unyielding commitment to quality and the utmost satisfaction of our customers.

Premium Panel Exchange

Premium Panel Exchange

The Dell Premium Panel Exchange allows a free panel replacement during the Limited Hardware Warrantyi period even if only one bright pixel is found.

upgrade your support.

Upgrade your support

Get a higher level of support with ProSupport or Premium Support for monitorsi. You'll get 24x7 supporti for set-up, configuration, troubleshooting and more from highly trained experts, plus next business day Advanced Exchangei if your warranty issue can't be resolved over the phone.

Dell Service Illustration - Advanced Exchange - Arrows

Advanced Exchange Service

Your monitor comes with a 1-year Advanced Exchange Servicei so that if a replacement becomes necessary, it will be shipped to you the next business day during your 1-year Limited Hardware Warrantyi.


Complete your experience with accessories designed to make the most of your Dell Monitor.
Picture of a Dell Single Monitor Arm MSA20

Dell Single Monitor Arm - MSA20

Enjoy a virtually toll-free assembly and easy installation with this Dell Single Monitor Arm.

Picture of a Dell UltraShrap Webcam WB7022

Dell UltraSharp Webcam - WB7022

Experience best image quality in its class with the world’s most intelligent 4K webcam.

Picture of a Dell Premier Wireless Headset WL7022

Dell Premier ANC Wireless Headset - WL7022

Collaborate with ease anywhere with this Teams certified wireless headset which offers active noise cancellation and smart sensors that automatically mute and unmute your call.

34" curved, ultra-wide WQHD (3440 x 1440) screen designed to keep you immersed in any task you choose. Featuring USB-C connectivity and built-in speakers.