G.Skill Ripjaws SO-DIMM Series 32GB (16GB x 2) 260-Pin SO-DIMM PC4-21300 DDR4 2666 CL19-19-19-43 1.20V Dual Channel Laptop Memory Model F4-2666C19D-32GRS at Amazon.com
Arch Memory 4GB 204-Pin DDR3 1600 MHz So-dimm RAM for Lenovo ThinkCentre E93z 10BA Series at Amazon.com
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
OWC 128GB (4 x 32GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with 27" iMac w/Retina 5K (Early 2019 and up) and Compatible PCs (OWC2666DR4S128S) at Amazon.com
SAMSUNG 8GB DDR3 SO-DIMM Memory Module at Amazon.com
Corsair Memory Kit 16GB (2x8GB) DDR4 2400MHz SODIMM Memory, (2 x 8GB) at Amazon.com
Synology SODIMM Non-ECC RAM DDR4-2666 4GB (D4NESO-2666-4G) at Amazon.com