IMac (Retina 4K, 21.5-inch, Late 2015)



The iMac (Retina 4K, 21.5-inch, 2015) was released on 2015.

The firmware identifier is iMac16,2.

Operating System

 * First Release: OS X El Capitan (10.11)
 * Latest Release: macOS Monterey (12.6.3)