Dell

Dell S3425DW monitor 34" 3440 × 1440 VA 120 Hz USB-C

The Dell S3425DW is a 34-inch ultrawide monitor with a 21:9 aspect ratio and 3440 × 1440 resolution that takes the place of two smaller screens on your desk. The VA panel refreshes at 120 Hz and the USB-C connection delivers up to 65 W to a laptop, so charging and data share a single cable. Speakers are built in.

  • Display: 34″, 3440 × 1440, 21:9 aspect ratio
  • Panel and refresh rate: VA, 120 Hz, 1 ms response time
  • Brightness and viewing angles: 300 cd/m², 178° / 178°
  • Ports: 2 × HDMI, USB-C supplying up to 65 W
  • Adjustments: height and tilt
  • Ergonomics: VESA 100 × 100 mm, built-in speakers

Description

A wide screen that replaces two monitors

A 34-inch 21:9 panel is roughly a third wider than a standard 16:9 screen of the same height. At 3440 × 1440 you can place two full-size documents side by side, keep a long editing timeline in view or open a wide spreadsheet next to its chart. Unlike a pair of separate monitors, there is no bezel running down the middle, no second cable and no need to drag the cursor across a gap between screens.

A VA panel and 120 Hz for smooth motion

The strength of VA is deeper blacks and higher contrast than a typical IPS panel, which shows in films and dark game scenes. A 120 Hz refresh rate is double that of an ordinary 60 Hz office monitor, so the cursor, scrolling and moving images look noticeably smoother. The 1 ms response time reduces trailing behind fast objects, and 178° viewing angles keep colours consistent even when you look at the screen from the side.

One USB-C cable for your laptop

The USB-C connection can supply up to 65 W of power. Many laptops can charge directly from the monitor, and if the laptop's USB-C port supports video output, the picture travels over the same cable — the charger can stay in your bag. Two HDMI ports take a second computer, a games console or a media player. DisplayPort is not listed in the manufacturer data, and there is no Ethernet port.

Speakers and an adjustable stand for everyday comfort

The built-in speakers cover video calls, background music and clips without separate speakers. The stand adjusts in height and tilt so the top edge of the screen can sit at eye level and your neck stays straight. If desk space is tight, the monitor mounts on a wall or an arm using the VESA 100 × 100 mm standard. It weighs 9.38 kg, so make sure the mount is rated for that load.

Who this monitor is for

Office workers and analysts who keep many windows and long spreadsheets open at once; laptop users who want to connect a home desk with a single USB-C cable; video and audio editors who need room for a timeline; and gamers who enjoy a 21:9 field of view and 120 Hz smoothness without needing esports refresh rates.

Specifications

General

BrandDell
Height adjustmentYes
Tilt adjustmentYes
VESA mountingYes
VESA mounting interfaces100x100 mm
Viewing angle, horizontal178 °
Viewing angle, vertical178 °
EAN5397184962398

Display

Display diagonal34 "
Display3440 x 1440 pixels
Panel typeVA
Maximum refresh rate120 Hz
Response time1 ms
Display brightness300 cd/m²
Aspect ratio21:9
TV tuner integratedNo

Audio

Built-in speaker(s)Yes

Ports

Ethernet LAN (RJ-45) portsNo
HDMI ports quantity2
USB-CYes
USB-C power delivery65W

Connectivity

ConnectivityHDMI, USB

Dimensions & weight

Net weight9.38 kg

Questions & answers

Can the monitor be wall-mounted?

Yes, it has a VESA 100 × 100 mm mount. When choosing a wall bracket or arm, allow for the monitor's weight of 9.38 kg.

How much power does USB-C deliver to a laptop?

Up to 65 W. That is enough for many thin and office laptops; powerful gaming laptops and workstations may still need their own charger.

Can I connect two computers at the same time?

Yes: the two HDMI ports plus USB-C let you keep, for example, a laptop and a games console connected at once. The manufacturer does not specify a built-in KVM switch or picture-in-picture mode.

Does the monitor support HDR?

The manufacturer does not specify HDR support. The 300 cd/m² brightness is designed for everyday work and entertainment indoors.

Can I connect a games console?

Yes, a console plugs into one of the two HDMI ports and the monitor can stay connected to your computer at the same time. Whether the console runs at 120 Hz depends on the console and the game; the manufacturer does not specify the refresh rate supported over HDMI.

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