Dell Pro 34 Plus USB-C review: A pricey ultrawide monitor built for work

Best Prices Today: Dell Pro 34 Plus USB-C

Ultrawide monitors are a great option for office productivity, and, at a glance, the Dell Pro 34 Plus looks ideal for the home office. It has a 34-inch IPS panel with good brightness and clarity, as well as extensive USB-C connectivity. However, the monitor’s pricing and overall image quality narrow its appeal.

Read on to learn more, then see our roundup of the best monitors for comparison.

Dell Pro 34 Plus USB-C P3425WE specs and features

A look at the Dell Pro 34 Plus USB-C’s spec sheet quickly reveals what the monitor is about: connectivity. The monitor has a USB-C port with up to 90 watts of Power Delivery. That connects to one USB-C and three USB-A downstream ports. Ethernet is supported, too.  

• Display size: 34-inch 21:9 aspect ratio
• Native resolution: 3440×1440 (WQHD)
• Panel type: IPS Technology
• Refresh rate: 100Hz
• Adaptive sync: None
• HDR: No
• Ports: 1x USB-C with up to 90W power delivery, 1x USB-C (15W downstream), 1x DisplayPort 1.4, 1x HDMI, 1x RJ45 Ethernet (1GbE), 1x USB-B upstream, 3x USB-A downstream
• Additional features: KVM switch, Dell Display and Peripheral Manager support
• Warranty: 3-year Advanced Exchange Service
• Price: $749.99 MSRP

However, the monitor’s features are otherwise reserved. The monitor notably lacks the IPS Black technology found in Dell’s flagship widescreen monitors. It doesn’t have built-in speakers either, and has a limited range of image quality customization.

Dell Pro 34 Plus USB-C design

The Dell Pro 34 Plus deviates a bit from the design of prior ultrawide monitors. Instead of a silver or white colorway, Dell has moved back towards a conservative, all-black look. It makes sense for the monitor’s intended buyers, which include both businesses and home office users, but it’s bland.

Strangely, the monitor stand is still silver. It looks like Dell stuck with an existing silver monitor stand because, uh, that’s what they had on hand. It’s not the end of the world, but it’s not great. Looks aside, the monitor’s material quality is good. The plastics feel firm and have a pleasing texture.

It’s a curved monitor, as well, though only just. The curve is obvious when viewing the monitor from above or below, but not obvious when viewing the monitor straight-on. While I’d prefer a flat screen for an office monitor, the Dell’s curve is subtle enough that I didn’t mind.

The stand provides a better-than-average range of adjustments for height and swivel, with 150mm for the former and 60 degrees for the latter. The stand can’t rotate 90 degrees for use in portrait orientation, but that’s typical for an ultrawide monitor. It’s simply too wide to practically support it.

A 100x100mm VESA mount is also available for use with third-party monitor stands and arms. The panel (without stand) weighs less than 16 pounds, so high-quality monitor arms will easily support it.

Dell Pro 34 Plus USB-C connectivity

As I’ve mentioned in past reviews, connectivity is often not just nice to have but, rather, the entire reason to buy a monitor. And the Dell Pro 34 Plus USB-C has plenty of connectivity.

The star of the show is the USB-C port. It supports USB-C with data rates up to 5Gbps, DisplayPort, and up to 90 watts of USB Power Delivery. While the data rate isn’t impressive, the Dell Pro 34 Plus covers all the basics that should be expected from a modern USB-C monitor.

Additional video connectivity includes DisplayPort and HDMI. All video inputs can handle the monitor’s maximum resolution and refresh rate. DisplayPort-out is not available, though, which is a bit disappointing for a monitor in this category.

The USB-C input connects to one downstream USB-C port and three downstream USB-A ports. Some of these ports are found in a convenient pop-out on the monitor’s chin, which makes it easier to connect USB devices. A USB-B input is available, too, and can connect to the downstream USB ports in place of, or alongside, a USB-C device.

A gigabit Ethernet port is available, which means the Dell Pro 34 Plus can extend wired Ethernet to a connected device. That’s handy if you’re connecting to a modern laptop (which, most likely, lacks Ethernet) and are looking for a wired Ethernet connection.

The Dell Pro 34 Plus covers all the basics that should be expected from a modern USB-C monitor.

Dell Pro 34 Plus USB-C menus and features

The Dell Pro 34 Plus USB-C’s options are controlled with a joystick on the rear right flank. That’s typical for a monitor, though placing the joystick in this location on an ultrawide makes the control a little hard to reach.

You might not need it, however, because the Dell Pro 34 Plus is compatible with Dell’s Display and Peripheral Manager (DPPM). It’s a software utility that can control most monitor features and image quality adjustments. Most competitors (including Asus and BenQ) offer similar options, but Dell’s utility looks nice and works well. DPPM is compatible with Windows 10/11 and MacOS, but not Linux.

Unfortunately, the Dell Pro 34 Plus doesn’t offer a great range of image quality adjustment. It has just a handful of image quality presets and does not provide gamma and color temperature presets that target specific values. While I understand the Dell Pro 34 Plus isn’t really meant for owners picky about image quality, I still feel that, at this price, more image quality adjustments should be expected.

The feature list is a bit light, too. The monitor has a KVM switch but it doesn’t have built-in speakers, a tripod mount, or an ambient light sensor. The lack of extra features feels stingy, given the MSRP. Those looking for more built-in functionality might consider the Dell Pro 34 Plus P3424WEB, a 34-inch ultrawide with camera, speakers, and similar USB-C connectivity, which is sold at an MSRP of $819.99.

Dell Pro 34 Plus USB-C SDR image quality

The Dell Pro 34 Plus USB-C is a 34-inch ultrawide monitor with a 21:9 aspect ratio, a display resolution of 3440×1440, and a conventional LCD-IPS panel.

The type of panel is important. Dell was the first company to sell monitors with a new type of IPS panel, called IPS Black, that has improved contrast, and IPS Black is found in many of its flagship monitors.

The Pro 34 Plus USB-C doesn’t have this new type of panel, however, which hampers its SDR image quality.

We start with brightness, where the Dell Pro 34 Plus USB-C provides a mid-pack maximum brightness of 327 nits. This level of brightness is greater than an OLED competitor, such as the MSI MPG 341C, and some IPS-LCD monitors, like the BenQ PD3420Q.

In general, the Dell Pro 34 Plus is bright enough for use in a home or business setting. However, it could be brighter, as some other monitors show.

Next up is contrast, where the Dell Pro 34 Plus USB-C provides a contrast ratio of 1220:1 at 50 percent of maximum brightness. That, once again, is a fine but not incredible result. The Dell Pro 34 Plus has a better contrast ratio than the BenQ PD3420Q, but it’s not as good as the bigger Dell Ultrasharp 4025QW, and obviously not in the same league as MSI’s MPG 341C, which has an OLED panel.

This is where the lack of an IPS Black panel comes back to bite the Dell Pro 34 Plus USB-C. It simply lacks the contrast needed to provide an immersive image. It’s not terrible, but shoppers can find price-competitive monitors that are much better.

Color gamut is a weakness of the Dell Pro 34 Plus. It achieved a color gamut that spanned 100 percent of sRGB, 83 percent of DCI-P3, and 78 percent of AdobeRGB. That’s not bad, but as the graph shows, it’s not competitive with similarly priced (or even less expensive) monitors sold in 2025.

Color accuracy is good, as the monitor achieved an average color error below 2. In general, color errors should not be easy to notice, and colors will appear to be realistic (or, at least, true to their source).

However, the monitor saw slight variants in gamma and color temperature. I measured a color temperature of 6700K, which is a bit cooler and more sterile than the target of 6500K. I also measured a gamma curve of 2.3, which is a bit darker than the target of 2.2. These aren’t huge swings, but I did find the color temperature noticeable. Also, the monitor lacks built-in adjustments that make this easy to fix (though software calibration is still an option).

Sharpness is decent. The monitor’s 3440×1440 resolution works out to about 110 pixels per inch across the 34-inch, 21:9 aspect ratio display. That’s not bad. Also, IPS-LCD monitors do not have the sub-pixel quirks of OLED monitors, which means the Dell Pro 34 Plus looks sharper than 34-inch OLEDs such as the MSI MPG 341C. But 3440×1440 resolution isn’t all that impressive in 2025, with 4K and 5K monitors now readily available.

Overall, then, the Dell Pro 34 Plus USB-C’s image quality is a bit of a bust. It’s okay. It does the job. And certainly, it’s fine for the general office productivity for which this monitor is intended. Still, there are many similarly priced monitors that offer better image quality at this price point.

Dell Pro 34 Plus USB-C HDR image quality

The Dell Pro 34 Plus USB-C does not support HDR.

That’s mostly fine for a monitor that targets office productivity. Office productivity apps don’t typically benefit from HDR, and most don’t support it.

However, OLED monitors (which are sold at this price) do offer HDR, and some are quite good at it. So, of course, they’re the better choice if HDR is important to you.

Dell Pro 34 Plus USB-C motion performance

It shouldn’t come as a surprise that the Dell Pro 34 Plus isn’t meant for gaming. However, the monitor does provide a refresh rate of up to 100Hz, which is better than nothing. Besides increasing motion clarity in games, the increased refresh rate also improves the readability of text and images as they scroll across the screen.

Adaptive sync is not supported, though, and the monitor quotes an unimpressive gray-to-gray pixel response time of 5 to 8 milliseconds, depending on the mode. Motion blur remains obvious, and the monitor can’t sync with an input device for smooth frame pacing.

Should you buy the Dell Pro 34 Plus USB-C?

The Dell Pro 34 Plus USB-C P3425WE is a workmanlike monitor built for, well, work. It doesn’t go out of its way to provide extra features or superior image quality and instead narrows its focus to connectivity and practical features, like a highly adjustable stand.

I don’t begrudge Dell for that focus, but I do begrudge Dell for the price. Listed at an MSRP of $749.99, and currently sold for that price, the P3425WE becomes difficult to recommend. It’s even $70 more than the outgoing Dell P3424WE.

Part of me wonders if the jump in price is the result of ongoing tariff concerns. Or, perhaps, Dell is simply trying to squeeze more cash from enterprise and productivity-minded shoppers willing to pay a lot for a practical display.

Either way, the price narrows the Dell Pro 34 Plus USB-C’s appeal. It’s a good option for home office shoppers who want outstanding connectivity, including Ethernet and multiple downstream USB-A ports. If you’re more concerned about image quality and motion clarity, though, you should consider OLED alternatives with USB-C, like the MSI MPG 341CQPX.

Best Prices Today: Dell Pro 34 Plus USB-C