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
CMS 16GB (2X8GB) DDR3 14900 1866MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Synology® DiskStation DS918+ - A5 at Amazon.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