Compatible For Mid 2020 iMac w/ Retina 5K Display model ID: iMac 20,1 / iMac 20,2 (i5 3.1GHz, i5 3.3GHz, i7 3.8GHz, i9 3.6GHz) Compatible For Early 2019 iMac w/ Retina 5K Display model ID: iMac 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz) Compatible For Late 2018 Mac Mini model ID: Mac Mini 8,1 (i3 3.6GHz, i5 3.0GHz, i7 3.2GHz) DDR4 2666MHz PC4-21300/ PC4-21333 Unbuffered NonParity Non-ECC 260 Pin 1.2V CL19 Dual Rank 2Rx8 based 1024x8 Module Size: 32GB Package: 1x32GB Special Installation Guide for iMac 2020 and wait 30 seconds for your iMac to recognize the new memory; Guaranteed Lifetime warranty from Purchase Date Free technical support