A-Tech 4GB RAM Replacement for Synology D3NS1866L-4G | DDR3/DDR3L 1866 MHz PC3L-14900 SODIMM Non-ECC Unbuffered Memory Compatible for DS620slim, DS918+, DS718+, DS418play, DS218+ at Amazon.com
Synology DS918+ NAS Review - SlashGear
Synology DiskStation DS918+ Review « Blog | lesterchan.net
Synology DS918+ 16 GB Memory Upgrade - YouTube
The DS918+ NAS Supports upto 16GB Memory – An installation Guide – NAS Compares
SYNOLOGY – DiskStation DS918+4-Bay NAS, Quad Core 1.5 GHz CPU (burst up to 2.3 GHz), 4GB DDR3L (up to 8GB) RAM, 2 x GbE, 4K UHD Transcoding, Expandable to 9 Bay | 漢科電腦公司| Hornington