AITC 16GB (2 x 8GB) Laptop Memory Module Upgrade DDR4 2666MHz SO-DIMM, Notebook Ram Module at Amazon.com
Amazon.com: Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 2666MHz (PC4-21300) C16 Memory Kit - Black : Everything Else
Gigabyte GP-GR26C16S8K2HU41 16GB (2x8GB) 2666MHz DDR4 Kit - Black at Amazon .com
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1 / 20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display, Late 2018 Mac Mini (8,1) PC4-21333 / PC4-21300 MAC RAM at Amazon.com
TEAMGROUP T-Force Vulcan Z DDR4 16GB Kit (2 x 8GB) 2666MHz (PC4 21300) CL18 Desktop Memory Module Ram - Red - TLZRD416G2666HC18HDC01 at Amazon.com
Crucial Memory Kit with 16GB (2x8GB) DDR4 PC4-21300 2666MHz SR x8 SODIMM Memory (CT2K8G4SFS8266) Compatible with HP EliteDesk 405 G4 Mini, 705 G4 Mini, 705 G5 Mini at Amazon.com
16GB (2x8GB) DDR4-2666MHz PC4-21300 Non-ECC UDIMM 1Rx8 1.2V Unbuffered Memory for Desktop PC by NEMIX RAM at Amazon.com