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
CMS 16GB (2X8GB) DDR3 14900 1866MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Synology® DiskStation DS918+ - A5 at Amazon.com
Synology DiskStation DS918+ | DataStoreWorks.com
Synology DS923+ Dual-Core 4-Bay NAS, 16GB RAM, 16TB (4 x 4TB) of Western Digital Red Plus Drives, and a 10GbE Adapter Fully Assembled and Tested By CustomTechSales - Newegg.com
The DS918+ NAS Supports upto 16GB Memory – An installation Guide – NAS Compares
Synology DS918+ 16GB Guide – NAS Compares
Synology DS918+ 16GB Guide – NAS Compares
Upgrading Memory on Synology DiskStation DS918+ -
Amazon.com: Timetec Hynix IC 8GB Compatible for Synology NAS DiskStation DS218+ DS918+ DDR3/ DDR3L 1866Mhz PC3L-14900 1.35V Non-ECC Unbuffered 204 Pin SODIMM Memory RAM (8GB) : Electronics