Corsair Vengeance Series 16GB 2x8GB DDR4 SODIMM 2666MHz CL18 Memory Kit For Notebook 16 GB 2 x 8GB DDR4 2666PC4 21300 DDR4 SDRAM 2666 MHz CL18 1.20 V Unbuffered 260 pin SoDIMM - Office Depot
OWC 16GB (2 x 8GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S16P) at Amazon.com
Apple Memory Module 16GB DDR4 2666MHz SO-DIMMS (2x8GB) - Apple