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The iMac (Retina 4K, 21.5-inch, 2019) was released on 19 March 2019
.The firmware identifier is iMac19,2.
Operating System
- First Release: macOS Mojave (10.14)
- Latest Release: macOS Sonoma (14.5)
- Latest Beta Release: macOS Sequoia (15.0 beta 4)