Amazon.com: Crucial 8GB Single DDR4 2666 MT/s (PC4-21300) SR x8 DIMM 288-Pin Memory - CT8G4DFS8266 : Everything Else
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
Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) DR X8 SODIMM 260-Pin Memory - CT16G4SFD8266 at Amazon.com
Crucial Memory Bundle with 16GB (2 x 8GB) DDR4 PC4-21300 2666MHz Memory (CT2K8G4SFS8266) Compatible with Latitude Notebook Laptop 5500, 5580, 5590, 5591, 7200, 7280, 7290, 7300, 7390, 7400, 7480, 7490 at Amazon.com