Patriot Signature Line Series DDR4 16GB (1 x 16GB) 3200MHz SODIMM (1 Rank Single-Sided Module) at Amazon.com
OWC 64GB (4 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S64S) at Amazon.com
Kimtigo DDR4 16GB Laptop Dram 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook (SODIMM) RAM Non-ECC Unbuffered Single Rank 260 Pin PC Computer Memory Module Upgrade at Amazon.com
TEAMGROUP Elite DDR4 16GB Single 2666MHz PC4-21300 CL19 SODIMM 260-Pin Laptop Memory Module Ram - TED416G2666C19-S01 at Amazon.com