32GB Kit 2x16GB DDR4-2666 PC4-21300 ECC SODIMM 2Rx8 Memory Upgrade by NEMIX RAM at Amazon.com
Corsair Mac Memory 64GB (4X 16GB) DDR4 2666MHz C18Memory Kit at Amazon.com
Crucial 32GB Kit (16GBx2) DDR4 2666 MT/s (PC4-21300) DR X8 DIMM 288-Pin Memory - CT2K16G4DFD8266 at Amazon.com
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
PNY Performance 8GB DDR4 DRAM 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook/Laptop (SODIMM) Computer Memory RAM – MN8GSD42666 at Amazon.com
Adamanta 8GB (1x8GB) Laptop Memory Upgrade DDR4 2666Mhz PC4-21300 SODIMM 1Rx8 CL19 1.2v Notebook RAM DRAM at Amazon.com
Arch Memory 16GB 260-Pin DDR4 2667 MHz So-dimm RAM for Razer Blade 15 (2018) Advanced RZ09-02386 at Amazon.com
OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz 260pin SO-DIMMs Memory Ram Module, Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs, (OWC2666DDR4S32P) at Amazon.com