16GB (8GBx2) iMac Memory for 27-inch Retina - 2019 to Current - Models 19.1 20.1 20.2

16GB (8GBx2) DDR4-2666MHz iMac Memory for the 27-inch Retina. 2019 to Current. Model ID 19,1 20,1 and 20,2. The 21.5-inch iMac Models are not user-upgradable. Contains two (2) 8GB Low Power SO-DIMM memory modules that are specifically designed and SPD configured for the March 2019 27-inch iMac with 5K Retina Display. This module is compatible with the latest Apple Firmware. Specifications: Total Capacity: 16GB (8GBx2) Data Rate: 2666MHz Bus Speed: PC4-21300 Form Factor: DDR4 Non-ECC, Unbuffered, SO-DIMM No. of Pins: 260 Module Ranks: Single Rank, Low Noise 8-Layer PCB Voltage: 1.2V CAS Latency: 17 Features: True DDR4 Major Thermal Tested ROHS Certified, Compliant with JEDEC specifications Watch our installation video: Click here for Apple's installation guide.