Dell 1RX8 1x8GB DDR4 2666Mhz RAM Memory Green | Techinn
Dell 64GB Ram Memory Upgrade - DDR4; 2666MHz | Dell USA | Dell USA
Apple Memory Module 16GB DDR4 2666MHz SO-DIMMS (2x8GB) - Apple
Performance DDR4 2666MHz Notebook Memory
Kingston 16GB DDR4 2666Mhz ECC Unbuffered Server Memory - KTL-TN426E/16G - Server Memory - CDW.com
Crucial 8GB DDR4-2666 PC4-21300 CL19 Single Channel Memory Module CT8G4SFRA266 - Micro Center
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