64GB Kit 2x 32GB DDR4 2666 2667MHz Memory RAM for APPLE MAC MINI Late 2018 A1993 | eBay
OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory, Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs, (OWC2666DDR4S32P) at Amazon.com
Hynix 8GB PC4-21300 DDR4-2666MHz 260-Pin SODIMM 1.2V Single Rank Memory Module HMA81GS6CJR8N-VK at Amazon.com
RISHIL WORLD XIEDE DDR4 2666MHz 2667MHz 8GB PC4 Memory RAM Module for Laptop : Amazon.in: Computers & Accessories
Apple Memory Module 16GB DDR4 2666MHz SO-DIMMS (2x8GB) - Apple
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
8GB Memory for Razer Blade 15 (2018) DDR4 2667MHz SODIMM RAM (PARTS-QUICK Brand) at Amazon.com