Apple Memory Module 64GB DDR4 2666MHz SO-DIMMS (2x32GB) - Apple
OLOy DDR4 RAM 64GB (2x32GB) 2666 MHz CL19 1.2V 260-Pin Laptop Gaming SODIMM Upgrade for 2019/2020 iMac 27-inch with Retina 5K Display Late 2018 Mac Mini (MD4S322619MZDC) at Amazon.com
Corsair Vengeance Performance SODIMM 64GB (2x32GB) DDR4 3200MHz CL22 Unbuffered for AMD Ryzen 4000 Series Notebooks Memory - Black at Amazon.com