iMac · 2009
iMac (21.5-inch, Late 2009)
Model identifier iMac10,1. Newest compatible macOS: macOS High Sierra.
- Model identifier
- iMac10,1
- Introduced
- 2009
- Newest macOS
- macOS High Sierra 10.13
- Family
- iMac
Download macOS for this Mac
macOS High Sierra 10.13The 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:
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).
MB950xx/A MC413xx/A
Questions
What is the newest macOS for the iMac (21.5-inch, Late 2009)?
Apple lists macOS High Sierra as the newest compatible operating system for the iMac (21.5-inch, Late 2009).
What is the model identifier of the iMac (21.5-inch, Late 2009)?
The iMac (21.5-inch, Late 2009) uses the model identifier iMac10,1. You can check yours in System Information › Hardware Overview.
Source: Apple – Identify your iMac model.