The quickest way to identify your monitor

The easiest method is to look at the back or underside of your monitor for a label or sticker. Most manufacturers print the model number, brand name, and sometimes the screen size and panel type on a permanent label. Write down the model number — it usually starts with letters followed by numbers, like "Dell U2720Q" or "LG 27GP850" — and search it on the manufacturer's website. Within seconds you will have the full specifications.

If the label is worn or missing, check your computer's display settings. On Windows, right-click the desktop and select "Display settings," then scroll down and click "Advanced display settings." On Mac, go to the Apple menu, select "System Settings," then "Displays." Both will show you the resolution and refresh rate, which narrows down what you have. You can also use free tools like GPU-Z (Windows) or System Information (Mac) to see the exact monitor model your computer recognizes.

Key Takeaways

  • The model number on a physical label at the back of your monitor is the fastest way to identify it — search that number on the manufacturer's website for full specifications.
  • Windows display settings and Mac System Settings both show your resolution and refresh rate, which help you narrow down the monitor type even without a label.
  • Panel type (IPS, VA, TN) affects color accuracy and viewing angles, and you can find this information in the monitor's manual or on the manufacturer's product page.
  • Connection type (HDMI, DisplayPort, USB-C) is visible on the back of the monitor and tells you what cables you need to replace or upgrade.

Reading the physical label on your monitor

Turn your monitor around or tilt it forward to see the back panel clearly. Look for a white or silver sticker, usually in the lower corner or center. The label will show the brand name (Dell, LG, ASUS, BenQ, HP, etc.), the model number, the year of manufacture, and sometimes the screen diagonal in inches. The model number is what you need — it is typically a short alphanumeric code like "VP2468a" or "PG279Q."

Once you have the model number, open a web browser and search "[Brand] [Model Number] specifications." For example, "Dell U2720Q specifications." The manufacturer's official product page will list the panel type (IPS, VA, or TN), resolution, refresh rate, brightness, contrast ratio, and all available ports. This is the most reliable source because it comes directly from the maker.

If you cannot find a label, check inside the monitor's manual if you still have it. The manual cover or first page always lists the model number. If you no longer have the physical manual, search "[Brand] [Model Number] manual PDF" — most manufacturers keep archives online.

Using your computer's display settings to identify your monitor

Your operating system knows some information about your monitor automatically. On Windows 10 or 11, right-click on an empty area of the desktop and select "Display settings." Scroll down to "Advanced display settings." You will see the resolution (like 1920 × 1080 or 2560 × 1440) and the refresh rate (like 60 Hz or 144 Hz). These two numbers alone tell you a lot about what class of monitor you own.

On Mac, click the Apple menu in the top-left corner, select "System Settings," then click "Displays." You will see the resolution and refresh rate there as well. Note that Mac sometimes shows the resolution in scaled form rather than native resolution — the native resolution is what the monitor actually supports.

These settings do not always show the exact model number, but they narrow the field significantly. A 1440p 144 Hz monitor is very different from a 1080p 60 Hz monitor, and knowing this helps you search more effectively. You can also use the free tool GPU-Z on Windows (read from techpowerup.com) — it displays the monitor model name that your graphics card recognizes, which is often the full model number.

Understanding monitor panel types and what they mean

Once you have the model number, the manufacturer's page will tell you the panel type. The three most common are IPS (In-Plane Switching), VA (Vertical Alignment), and TN (Twisted Nematic). Each has different strengths, and knowing which one you have explains why your monitor looks the way it does.

IPS panels have the best color accuracy and the widest viewing angles — the image stays clear even if you look at it from the side. They are common in professional design work, photo editing, and higher-end consumer monitors. VA panels have higher contrast ratios, meaning blacks look deeper and the image pops more, but the viewing angles are narrower. TN panels are the oldest technology and are now mostly found in budget monitors or older equipment — they have the worst color accuracy and viewing angles, but they are cheap to make.

If you do photo or video work, you probably have an IPS panel. If you play fast-action games or watch movies, you might have a VA panel. If your monitor is very old or very inexpensive, it is likely TN. This information matters because it tells you what the monitor was designed for and what its real strengths are.

Checking the ports and connection types on the back

Turn your monitor around and look at the back panel. You will see several ports — these tell you what cables your monitor accepts and what you can connect it to. The most common ports are HDMI (a flat rectangular port), DisplayPort (a smaller rectangular port with a notch), and USB-C (a small oval port). Older monitors may have DVI (a larger port with two rows of pins) or VGA (a blue port with three rows of pins).

The type of port matters because it determines what cables you need and what features are available. DisplayPort and USB-C support higher resolutions and refresh rates than HDMI on older monitors. USB-C monitors can also charge your laptop while displaying video, which is useful if you have a newer computer. If your monitor has only VGA or DVI, it is at least 10 years old and may not support modern resolutions or refresh rates well.

You may also see a USB hub port (usually a small rectangular port labeled "USB" or "USB 3.0") and an audio jack. These are extras — the USB hub lets you plug in keyboards or mice through the monitor, and the audio jack lets you connect speakers or headphones. Not all monitors have these, but if yours does, it is a sign of a more feature-rich model.

Finding the screen size and resolution combination

The screen size (measured diagonally in inches) and the resolution (the number of pixels) together define how sharp your image looks. Common combinations are 24 inches at 1920 × 1080, 27 inches at 2560 × 1440, and 32 inches at 3840 × 2160 (4K). The manufacturer's label or product page will list both.

If you want to measure the screen yourself, use a measuring tape from one corner of the screen to the opposite corner, measuring only the glass or display area, not the bezel (the black frame around it). Then search online for monitors with that diagonal measurement and the resolution you found in your display settings — this will narrow down your exact model.

The combination of size and resolution tells you the pixel density, which affects sharpness. A 27-inch monitor at 1440p looks sharper than a 27-inch monitor at 1080p because the same number of pixels is spread across the same space. A 32-inch monitor at 1440p looks softer because the pixels are larger. This is why the same resolution can look different on different screen sizes.

What to do if you still cannot identify your monitor

If the label is completely illegible and your computer does not recognize the monitor model, you have a few other options. Take a clear photo of the back of the monitor showing the label, the ports, and any visible text, then post it to a tech forum like Reddit's r/techsupport or a manufacturer-specific subreddit. Include the brand name if visible, the resolution and refresh rate from your display settings, and the port types you see. Someone will usually identify it within hours.

You can also contact the monitor manufacturer's support team directly. Have your resolution, refresh rate, screen size, and port types ready. They can often narrow down the model based on these specs alone, especially if the monitor is a recent model. Most manufacturers have live chat or email support on their websites.

If the monitor is very old or from a brand that no longer exists, you may never find the exact model — but you do not need to. Knowing the resolution, refresh rate, panel type, and port types is enough to understand what the monitor is capable of and whether it meets your needs.

Frequently Asked Questions

Can I find out what monitor I have just by looking at my computer's settings?

Partially. Your computer will show you the resolution and refresh rate, which narrows it down, but not always the exact model or brand. Using GPU-Z on Windows or checking System Information on Mac can sometimes reveal the model name. For complete information, you still need the label on the back of the monitor or the manufacturer's website.

What if my monitor is connected through a docking station or USB hub?

The monitor is still the same — the docking station just passes the signal through. Look at the physical monitor itself for the label and ports. Your computer's display settings will still show the resolution and refresh rate correctly, even if the monitor is connected indirectly.

Does the refresh rate number tell me what the monitor is used for?

Yes, roughly. A 60 Hz monitor is standard for office work and everyday use. A 75–100 Hz monitor is better for gaming and video. A 144 Hz or higher monitor is designed for competitive gaming or fast-action work. Professional monitors for photo and video editing are usually 60 Hz because refresh rate does not matter for still images.

If I find the model number, where do I look for the manual?

Search "[Brand] [Model Number] manual PDF" in any search engine. Most manufacturers keep manuals in an online archive on their support pages. You can also visit the brand's main website, find the support section, and search for your model number there. Manuals usually list all specifications, warranty information, and troubleshooting steps.

What does it mean if my monitor has multiple HDMI or DisplayPort connections?

It means you can connect multiple devices at once — for example, a laptop and a gaming console — and switch between them using the monitor's menu buttons or a remote. You still use only one input at a time, but having multiple ports gives you flexibility. Check your monitor's manual to learn how to switch inputs.