IMac (Retina 5K, 27-inch, Late 2015)



The iMac (Retina 5K, 27-inch, Late 2015) was released on 2015.

The firmware identifier is iMac17,1.

Operating System

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