Can You Use an iMac as a Monitor?
Yes, you can use an iMac as a monitor, but only certain models support it. Older 27-inch Intel iMacs (2010–2019) can be used as an external display using Target Display Mode. Newer iMacs with Apple Silicon (M1 and later) do not support this feature, so alternative methods are required.
If you have an iMac sitting on your desk, you may wonder whether its stunning display can do double duty as an external monitor for another device. The short answer is: it depends on your iMac model. Apple’s Target Display Mode makes this possible on older iMac models, but newer iMacs with Apple Silicon no longer support it natively.
This guide covers every scenario clearly, including how to use your iMac as a monitor for another Mac, a Windows PC, or via alternative methods, so you always know exactly what your options are.
What Does “iMac as a Monitor” Actually Mean?
Using an iMac as a monitor means turning your iMac into a display for another device, such as a MacBook or PC.
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It simply means using your iMac screen instead of a separate external monitor.
Pro Tip
Before buying a Thunderbolt cable, check your iMac model first. Not all Thunderbolt cables work with every supported iMac, and using the wrong one means Target Display Mode simply will not activate.
Which iMac Models Support Target Display Mode?
Supported iMac Models
- iMac 27-inch (2010–2011) → Mini DisplayPort
- iMac 27-inch (2011–2014) → Thunderbolt
- iMac 27-inch (2014–2019) → Thunderbolt 2 / USB-C
These are the only models that can be used as a monitor natively.
iMac Models That Do NOT Support It
- Any iMac with M1, M2, M3, or M4 chips
- All 21.5-inch iMac models
- iMac Pro
If you’re searching:
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Only the 27-inch Intel iMacs listed above will work.
Can You Use an iMac as an External Monitor?
Yes, but only under specific conditions. Apple introduced Target Display Mode on select iMac models, allowing the iMac screen to act as an external display for a connected device. However, this feature was discontinued on iMacs with Apple Silicon chips (M1 and later). If you own a newer iMac, you will need to rely on alternative software-based solutions instead. Understanding which category your iMac falls into is the first and most important step.
How to Use iMac as a Monitor for Another Mac
What You Need
- Compatible iMac (2010–2019)
- Second Mac (MacBook or desktop)
- Correct cable
Steps to Use iMac as Monitor
- Connect both devices with the correct cable
- Press Command + F2 on the iMac
- Your iMac screen will display the other Mac
- Adjust display settings on the source Mac
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Can You Use an iMac as a Monitor for a PC?
Short answer: No, not directly.
You cannot use an iMac as a monitor for a PC using Target Display Mode, because this feature only works between two Mac devices.
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A direct connection is not supported.
However, you can still use your iMac screen with a PC using alternative methods.
Best Workarounds for PC Users
1. Remote Desktop
This allows you to access and control your PC from your iMac over the same network.
- Easy to set up
- Not a true external display
2. Video Capture Card
A capture card can take video output from your PC and display it on your iMac.
- Works as a hardware workaround
- Requires extra equipment and setup
3. Shared Monitor Setup (KVM)
Instead of connecting directly, both devices connect to a separate monitor.
- More stable setup
- Requires an external display
How to Use a Newer iMac (M1, M2, M3) as a Monitor
Apple removed Target Display Mode from newer iMacs.
If you’re asking:
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You must use software-based solutions.
Best Alternatives
Luna Display
- Turns your iMac into a wireless second screen
- Reliable
- Works with Apple Silicon
Screen Sharing (macOS)
- Built-in option
- Free
- Not true extended display
How to Use iMac as a Second Screen (Alternative Setup)
If your iMac doesn’t support Target Display Mode, you can still extend your workspace:
- Use screen sharing
- Use third-party tools
- Use iPad with Sidecar
Important Tip Before You Start
Always check your iMac model before buying cables or accessories.
Using the wrong setup is the most common reason users fail when trying to use an iMac as a monitor.
Choosing the Right Setup for Work or Events
Using an iMac as a display is useful in creative workflows, offices, and presentations. However, many businesses prefer ready-to-use setups instead of configuring devices manually.
For events, exhibitions, and corporate environments, companies often rely on professional iMac rental or laptop rental solutions to ensure compatibility and smooth performance without technical issues.
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Final Thoughts
Using an iMac as a monitor is possible, but only if you have the right model. Older 27-inch iMacs offer a simple setup through Target Display Mode, while newer models require alternative solutions.
Understanding your device first will save time and help you choose the right method without unnecessary setup issues.
FAQs
Can I use any iMac as an external monitor?
No. Only specific 27-inch iMac models from 2010 to 2019 support Target Display Mode. iMacs with Apple Silicon chips and all 21.5-inch models do not support this feature.
How do I activate Target Display Mode on my iMac?
Connect your iMac to another Mac using a compatible Thunderbolt or Mini DisplayPort cable, then press Command + F2 on the iMac you want to use as a display.
Can I use my iMac as a monitor for a Windows PC?
Not through Target Display Mode, as it only works between two Mac computers. For Windows PCs, options include remote desktop software or a video capture card.
My iMac has an M1 chip. Can I still use it as a second screen?
Not natively. However, third-party solutions like Luna Display allow Apple Silicon iMacs to function as secondary screens for other devices.