Integral RAM 16GB kit (2x8GB) DDR4 2666MHz SODIMM Laptop Notebook MacBook Memory at Amazon.com
OWC 16GB (2 x 8GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S16P) at Amazon .com
Patriot Signature Line DDR4 16GB (2 x 8GB) 2666MHz (PC4-21300) UDIMM Dual Kit Memory Kit PSD416G2666K 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
Timetec 16GB KIT(2x8GB) DDR4 3200MHz (or 2933MHz or 2666MHz) PC4-25600 CL22 1.2V Non-ECC Unbuffered 1Rx8 Single Rank 288 Pin UDIMM Desktop PC Computer Memory RAM Module Upgrade (16GB KIT(2x8GB)) at Amazon.com
Patriot Signature Premium DDR4 16GB (2x8GB) 2666MHz (PC4-21300) UDIMM kit with Heatshield PSP416G2666KH1 at Amazon.com