OWC 64GB (2 x 32GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Ram Module Compatible with Mac Mini 2018, iMac 2019 and up, Dell, HP, Lenovo, ASUS and Compatible PCs (OWC2666DDR4S64P) at Amazon.com
Crucial 16GB (2 x 8GB) 260-Pin DDR4 SO-DIMM DDR4 3200 (PC4 25600) Laptop Memory Model CT2K8G4SFRA32A - Walmart.com
32GB Kit MP7N2G/A (2 x 16GB) 260-Pin DDR4 So-dimm RAM | Memory for Apple Woman Owned Small Business. Ready to Ship!