Lots of expansion possibilities can't hide that this is excessively priced for a machine that is only better than the stock DS1621+ in a few small areas. Save money and buy its cheaper brother instead.
Synology DSM; PCIe x8 slot; 10GbE port; NVMe caching;
Unjustifiably expensive; Still using eSATA for expansion; Can’t use NVMe drives as storage