Acer SD100 DRAM 8GB DDR4 2666MHz CL19 Laptop Memory 1.2V SO-DIMM Computer Module - BL.9BWWA.204 at Amazon.com
Amazon.com: OWC 8GB PC21300 DDR4 2666MHz SO-DIMM Memory Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs : Everything Else
Crucial RAM 8GB DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory CT8G4SFRA32A at Amazon.com
Amazon.com: NEMIX RAM 16GB Kit (2 x 8GB) DDR4-2666 SODIMM 2Rx8 Memory for ASUS Motherboards : Electronics
Super Talent DDR4-2666 SODIMM 16GB Value Notebook Memory PC Memory F26SB16GV at Amazon.com
8GB SNPHYXPXC/8G A9206671 260-Pin DDR4-2666 PC4-21300 Sodimm RAM Replacement Origin OEM Memory for Dell at Amazon.com
Crucial Memory Bundle with 16GB (2 x 8GB) DDR4 2666MHz SODIMM Upgrade kit CT2K8G4SFS8266 Compatible with iMac Retina 5K 27-inch 2019 (iMac19,1) and Mac Mini 2018 (Macmini8,1) at Amazon.com
HP 8GB DDR4 SDRAM Memory Module - 8 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21333 - ECC at Amazon.com