USB-C charging Get up to 90W of power delivery — the highest power delivery in a 25None QHD USB-C monitor — plus uninterrupted charging with the Always On Power Deliveryfeature for continuous power charging to your system even when the monitor is turned off

Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. See how we test. Since 2004, I have worked on PCMag’s hardware team, covering at various times printers, scanners, projectors, storage, and monitors. I currently focus my testing efforts on 3D printers, pro and productivity displays, and drives and SSDs of all sorts. Over the years, I have reviewed iPad and iPhone science apps, plus the occasional camera, laptop, keyboard, and mouse. I've also written a host of articles about astronomy, space science, travel photography, and astrophotography for PCMag and its past and present sibling publications (among them, Mashable and ExtremeTech), as well as for the PCMag Digital Edition. The User's Guide says the USB Type-C cable connects to the computer and “this port supports USB Power Delivery, Data, and DisplayPort video signal.” But none of that means anything to me. Power delivery? I already have power with the power cord. DisplayPort signal? I’m already using a DisplayPort cable. So I don’t get it. The stand on the Dell U2520D is fully flexible, so its easier to arrange your desktop in a suitable way that is both comfortable and functional. It also comes in handy if you want to set up multiple displays, especially since this model supports daisy-chaining. You can opt for a VESA mount with a 100 x 100 bolt pattern, but we only think it’s necessary in extreme or special circumstances.The Dell U2520D is a well-designed and equipped monitor for a variety of roles in business and home use cases. The monitor’s connectivity layout is easily one of the best in the market now, while the functional features such as the ergonomic stand make it a good buy if you want something that’s very user-friendly. The IPS panel also provides great image quality which does not need calibration to get a balanced or correct image output. This is to allow PC's with different video OUT ports to work on the U2520D. To access the U2520D three USB Type-A downstream ports, you must also connect to the PC either the USB Type-A to Type-C cable or the USB Type-C to C cable. Below are three possible configurations =

The U2520D is a good choice for a multi-monitor array. You can use the DisplayPort-out connection to daisy-chain a second monitor, which will be automatically detected and configured using Dell Express Daisy Chaining, which I first tested in the Editors’ Choice Dell 27 USB-C Monitor (P2720DC) mentioned up top. The OSD: Intuitive NavigationThis change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items. To return faulty items see our Returning Faulty Items policy. All other products will be delivered via the fastest available method (excluding bank holidays and weekends) and generally within 3-5 days, depending on customer location. I have the U2520D monitor. What’s the purpose of the USB Type-C cables that came with it? They are currently not connected, and theU2520D works just fine. I’ve connected theU2520D to my laptop with a DisplayPort cable. Use the USB-C cable that came with the U2520D to connect the USB-C input on the U2520D to the USB-C port on the XPS. At that point you'll have both video and USB data (to enable the USB ports built into the display) running over that single cable, rather than just video as you would have if you got a USB-C to DP cable. You'll also have 90W of power coming from the display, which is better than the 65W available from the D6000 but still not ideal for your XPS 15. Setup is a snap Experience the world’s most convenient 25” QHD USB-C multi-monitor setup Dell Express Daisy Chaining allows automatic detection of the second display skipping the manual step of changing OSD settings

Below is a chromaticity chart of the sRGB color space, which was generated when testing in Standard mode. The area within the triangle represents all the colors that can be made by mixing the primary colors red, green, and blue. The circles, representing my measurements, mostly lie a bit outside the triangle and are fairly evenly spaced. Just to confirm: It’s OK that I have the power cord attached (laptop to wall) AND have the D6000 cord attached. That “double” source of power isn’t harmful, right? It sounds like you’re saying that the D6000 is too weak and therefore using both is not only acceptable but necessary, right? I would say that the D6000 is fine as a typical everyday productivity solution, but games would definitely be a problem, because on top of the loss of the NVIDIA GPU, you'll have the additional performance and image quality penalties of DisplayLink's compression that exist even with systems that only have a single GPU. You might even find that full screen video is a bit of an issue in terms of motion and/or compression artifacts, though this might depend on the resolution of your display and what else is going on with your system when trying to watch it. Build quality is fantastic like most Dell monitors, so you have no reason to doubt the Dell U2520D’s reliability and durability. The plastics feel reinforced and sturdy, while the seams and edges are straight and smooth. The device doesn’t exhibit any kind of wobbling so you won’t see annoying vibrations on the screen if you are a heavy typer.Wide colour gamut - this may not sound like a downside, but the wider colour gamut means that in standard mode colours are very oversaturated. There is an sRGB mode, but for some stupid reason it limits the display brightness significantly. It is noticeably dimmer than my other U2515H for the same brightness setting in this mode. Rated luminance and contrast ratio are 350 nits (candelas per meter squared) and 1,000:1, respectively. In Standard mode, it turned in 280 nits, a bit shy of its Dell rating but still bright enough for its intended tasks, and an 1,141:1 contrast ratio, somewhat better than its rating. (See how we test monitors.)

The buttons make it easy to navigate through the OSD. You can change color space, input source, brightness, contrast, and a host of other parameters. Note that if you daisy-chain a second monitor, you will first want to enable the MST setting in the Display menu. It Nails the sRGB Color SpaceHard drive retention: Hard drive retention is not available on models with a soldered hard drive, including XPS 9315 2in1, Chromebooks or Venue tablets, except the Venue 11 Pro. Navigation through the U2520D’s onscreen display (OSD) is easy and intuitive. It is controlled by four small, physical buttons next to the power button on the right side of the monitor’s bottom bezel. When you press any of them, all four buttons become labeled by illuminated icons above them. Once you enter the menu system, they are identified by up, down, and right arrows, plus close. This model offers a pixel density of around 117PPI which isn’t close to 4K monitors, but sharp enough to produce clear and detailed images. Small objects like text can become less legible for some users, but as long as your eyesight is healthy you won’t have any problems. Gaming and videos look great since the pixels aren’t noticeable on this device when it viewed at a normal distance. You can improve the color dE to an average of only 1.13 if you have a colorimeter, but we think it is unnecessary unless you are into editing and content creation. The extra cost of the gadget plus the high-side price of the Dell U2520D is too much, and the total can get you a higher-tiered model that will perform better in this regard. The only setting you need to touch right away is brightness since you need to find a perfect level that is comfortable for your eyes during extended use.