iMac · 2017
iMac (21.5-inch, 2017)
Model identifier iMac18,1. Newest compatible macOS: macOS Ventura.
- Model identifier
- iMac18,1
- Introduced
- 2017
- Newest macOS
- macOS Ventura 13
- Family
- iMac
Download macOS for this Mac
macOS Ventura 13The newest macOS Apple supports on this Mac. See download options →
Older versions you can also install, if they are newer than the macOS this Mac shipped with:
- macOS Monterey 12
- macOS Big Sur 11
- macOS Catalina 10.15
- macOS Mojave 10.14
- macOS High Sierra 10.13
- macOS Sierra 10.12
A Mac can't run a macOS older than the one it came with. macOS Recovery can reinstall the original version.
Part numbers
Also called order or configuration numbers. “xx” stands for a region code, such as LL (USA) or B (UK).
MMQA2xx/A MHK03xx/A
Questions
What is the newest macOS for the iMac (21.5-inch, 2017)?
Apple lists macOS Ventura as the newest compatible operating system for the iMac (21.5-inch, 2017).
What is the model identifier of the iMac (21.5-inch, 2017)?
The iMac (21.5-inch, 2017) uses the model identifier iMac18,1. You can check yours in System Information › Hardware Overview.
Source: Apple – Identify your iMac model.