Identifying your iMac model: simpler than you think
Your iMac is in front of you. You use it every day. But which model exactly? That question only arises when you're looking for new accessories or considering an upgrade. That's when the searching begins. Apple menu, system information, model numbers—it feels like plowing through a technical manual.
Yet identifying your iMac model is ridiculously simple if you know where to look. Forget those endless lists of specifications and cryptic codes. In three steps, you'll know exactly what kind of machine you have. No need to fiddle with looking up serial numbers or examining the undersides. Just three clicks from your desktop and you'll have all the information you need.
Whether you want to order additional memory or are looking for a new iPhone case to go with your setup, checking which iMac you have first will save you headaches later.
Useful links
- View our refurbished iMac collection
- Discover refurbished MacBook Pro models
- Find compatible accessories for your Mac
The fastest method via the Apple menu
Your iMac tells you everything you need to know without having to crawl under desks or retrieve boxes from the attic. The Apple menu provides all the essential information in just three clicks. Click the apple icon in the upper left corner, choose "About This Mac," and there it is: your model name, the year, and even the specific model number.
This overview screen shows more than just the name. You'll immediately see the year of manufacture, for example, "iMac (24-inch, M1, 2021)" or "iMac (Retina 5K, 27-inch, 2020)." This information is crucial when ordering new RAM or checking the compatibility of an external monitor. The system also displays your current macOS version, processor type, and the amount of RAM installed.
Why Model Year Matters
Each iMac generation has specific features. A 2019 model has different ports than a 2021 version. The new M1 and M2 models work fundamentally differently from their Intel predecessors. This difference determines which software you can run, which monitors you can connect, and how many screens you can use simultaneously.
The 27-inch models from 2020, for example, still have Intel processors and offer expandable RAM slots. The newer 24-inch versions with Apple Silicon have fixed memory modules. These are details you should know before planning an upgrade or purchasing new peripherals.
The serial number as a backup option
Sometimes the Apple menu doesn't work. Perhaps your Mac won't start up, or you're temporarily using a different operating system. That's when the serial number comes in handy. This unique number is located in three places:
- On the bottom of the foot on older models
- On the original packaging next to the barcode
- In the aforementioned "About This Mac" window
This serial number allows you to find out exactly which model you have on the Apple support website. Enter the number into their search bar and you'll see the complete specifications, warranty status, and compatible accessories. This is useful if you want to know, for example, which macOS version your device supports.
Physical landmarks
Even without turning on your Mac, you can often tell a lot. The screen size is the most obvious feature. Apple currently produces 24-inch models, but previously there were 21.5-inch and 27-inch versions. The color of the chassis also tells a story. The new M1 iMacs come in seven colors, while older models were only available in silver.
Also note the thickness. The M1 models are remarkably thin, just 11.5 millimeters. Older versions have a thicker profile with a bulge on the back. The ports also vary by generation. Thunderbolt 2, Thunderbolt 3, USB-A, or just USB-C—each era has its own combination.
Advanced System Information
For more technical details, open the System Information app. Hold down the Option key while clicking the Apple menu. "System Information" will now appear instead of "About This Mac." This application shows everything from your exact processor model to the graphics card type and the serial numbers of connected devices.
The hardware section provides details about your display, memory, and storage. The software section shows which extensions and drivers are installed. This level of detail is especially useful for troubleshooting compatibility issues or verifying specific hardware requirements for professional software.
Practical situations where model knowledge helps
You want to connect a second monitor but don't know which cable you need. Or you're considering upgrading to the latest macOS but unsure if your machine can handle it. Perhaps you're looking for a carrying case or want to know if that new webcam will work with your model. In all these cases, model identification is the first step.
This knowledge is especially valuable for refurbished devices. A 2019 model might perform well but may lack certain modern features. A 2020 version might have better specifications but also cost more. By knowing exactly what your current setup is, you can make better choices when considering a replacement or upgrade.
Tips for documentation
Write down your model information somewhere safe. A simple note on your phone or a photo of the "About This Mac" screen will prevent future searches. Also, keep the original packaging if you still have it. Not only for the serial number, but also for potential resale. Complete packaging increases the value.
Take screenshots of important system information before installing major updates. This way, you'll always have a reference if something goes wrong. Save this information in the cloud so you can access it even if your Mac experiences problems.
Conclusion: three clicks for all information
Identifying your iMac model isn't rocket science. The Apple menu provides all the information you need in just three clicks . Whether you're looking to upgrade memory, considering a refurbished iMac , or simply looking for the right cables, knowing your model number and year will help you avoid bad purchases.
Write this information down somewhere handy, so you don't have to search for it every time. Because let's be honest, you have better things to do than constantly figure out which iMac is on your desk.
