Review on 32GB Memory Upgrade Kit For Laptops: Timetec DDR4 2666MHz PC4-21300 Non-ECC Unbuffered RAM Modules (2X16GB) With 2Rx8 Dual Rank And 260 Pin SODIMM Design, Ideal For Notebook PC And Computer Upgrades by Paul Ziegler

I was concerned reading about how some memory would work with a Synology NAS, which models and brands did and didn't work, etc. This one had a great price and many reports that it works with Synology. So, I opted to try it. (Timetec 16GB DDR4 2666MHz (DDR4-2666) PC4-21300 (PC4-2666V) Non-ECC Unbuffered 1.2V CL19 2Rx8 Dual Rank 260 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade (16GB) )Unboxed my new Synology DS220+, installed the RAM, and installed my new drives. Started right up first time. After initial startup, I confirmed a total of 18GB RAM. Can't beat it for compatibility and value.