Crucial 16GB Kit (8GBx2) DDR4 2666 MT/s (PC4-21300) SR x8 SODIMM 260-Pin Memory - CT2K8G4SFS8266 at Amazon.com
parts-quick 16GB Memory for Alienware M15 Gaming Laptop 2Rx8 DDR4 2666MHz SODIMM RAM at Amazon.com
Crucial 32GB Kit (16GBx2) DDR4 2666 MT/s (PC4-21300) DR x8 SODIMM 260-Pin Memory - CT2K16G4SFD8266 at Amazon.com
Integral RAM 16GB DDR4 2666Mhz SODIMM Laptop Notebook MacBook Memory at Amazon.com
TEAMGROUP Elite DDR4 16GB Kit (2 x 8GB) 2666MHz PC4-21300 CL19 Unbuffered Non-ECC 1.2V SODIMM 260-Pin Laptop Notebook PC Computer Memory Module Ram Upgrade - TED416G2666C19DC-S01 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
SK HYNIX 16GB 2RX8 DDR4 SO-DIMM PC4-21300 2666MHZ Memory Module HMA82GS6JJR8N-VK at Amazon.com
HP S1 Single RAM 16GB DDR4 2666MHz CL19 Laptop Memory - 7EH99AA#ABC at Amazon.com
V-Color 64GB (2 x 32GB) ECC SO-DIMM DDR4 2666MHz (PC4-21300) for microservers, workstations, Networking Platforms and Embedded Systems 2Rx8 CL19 1.2V (TES432G26D819K-VC) at Amazon.com
Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) DR X8 SODIMM 260-Pin Memory - CT16G4SFD8266 at Amazon.com
A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers at Amazon.com
Synology SODIMM ECC RAM DDR4-2666 16GB (D4ECSO-2666-16G) at Amazon.com
16GB (1x16GB) DDR4-2666MHz PC4-21300 1.2V SODIMM Laptop Memory by NEMIX RAM at Amazon.com
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