v-Color 32GB (2 x 16GB) ECC SO-DIMM DDR4 2666MHz (PC4-21300) for NAS Micro Server/Workstation/Compatible with Synology 21 Series 2Rx8 CL19 1.2V (TES416G26D819K-VKC) at Amazon.com
32GB DDR4 2666MHz SODIMM at Amazon.com
32GB (2x16GB) DDR4-2666MHz PC4-21300 1.2V SODIMM Laptop Memory by NEMIX RAM at Amazon.com
parts-quick 8GB Memory for Lenovo ThinkPad E595 Compatible RAM Upgrade DDR4 2666MHz SoDIMM at Amazon.com
parts-quick 8GB Memory for ASUS ExpertBook L1 L1400 Compatible DDR4 2666MHz SODIMM RAM at Amazon.com
SK hynix HMA851S6CJR6N - VK Non ECC PC4-2666V 4GB DDR4 at 2666MHz 260pin SDRAM SODIMM Single Kit Laptop Memory - OEM at Amazon.com
Kimtigo DDR4 2666 8G Laptop Dram 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook 1Rx8 Single Rank 260 Pin SODIMM Laptop PC Computer Memory RAM(8GB) at Amazon.com
Timetec 16GB KIT(2x8GB) DDR4 2666MHz (DDR4-2666) PC4-21300 (PC4-2666V) Non-ECC Unbuffered 1.2V CL19 1Rx8 Single Rank 260 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade at Amazon.com
OWC 32GB PC21300 DDR4 2666MHz SO-DIMM Memory Compatible with Mac Mini 2018, iMac 2019 and up, Dell, HP, Lenovo, ASUS and Compatible PCs (OWC2666DDR4S32G) at Amazon.com
Arch Memory AM-D4NESO-2666-4G 4GB 260-Pin DDR4 2666 MHz Sodimm RAM for Synology NAS Systems Except The DS220+ at Amazon.com