Timetec 16GB KIT(2x8GB) Compatible for Synology NAS DiskStation/ RackStation DDR3/DDR3L 1600MHz PC3L-12800 1.35V Non-ECC Unbuffered SODIMM RAM (Replacement for Synology RAM1600DDR3L-8GBx2) at Amazon.com
parts-quick 8GB Memory for Synology DiskStation DS716+II Compatible RAM at Amazon.com
parts-quick 4GB Memory for Synology DS220+ Compatible DDR4 SODIMM 2666MHz RAM at Amazon.com
How and when should I run a memory test on my Synology NAS? - Synology Knowledge Center
Timetec DDR4-2666 8GB Replacement for Synology D4ES01-8 DDR4 ECC Unbuffered SODIMM 2666MHz PC4-21300 260 Pin 1.2V CL19 Memory RAM (Compatible for RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+) at Amazon.com
16Gb (2X8Gb) Memory RAM Compatible with Synology Rackstation Rs3614Xs+ Compatible with Server Only By CMS B89 - Computer Memory Solutions
Synology: Which RAM to Buy For DS920+ NAS – Marius Hosting
Synology Memory Alternative - What do you all think of Arch Memory? Claims compatibility with Synology. Even the new DS1621+ which I have. Anyone had long term experience with this memory? Or