G.SKILL Ripjaws Series 32GB DDR4 3200 Laptop Memory - Newegg.com
OWC 64GB (2 x 32GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with Mac Mini 2018, iMac 2019 and up, Dell, HP, Lenovo, ASUS and Compatible PCs (OWC2666DDR4S64P) at Amazon.com
DIMM - Wikipedia
New Laptop DDR4 RAM Adapter Card DDR4 SO DIMM to DIMM Memory RAM 4-Layered PCB Design Desktop DIMM Memory RAM Connector Card _ - AliExpress Mobile