Synology 5-Bay Expansion Unit DX525 (Diskless)

Price: $519.99
(as of Oct 28, 2025 00:11:56 UTC – Details)


The Synology DX525 allows users to easily add up to five 2.5-inch or 3.5-inch drives to their setup, thanks to its straight forward installation process and DSM’s intuitive volume management software.
Supports drives on the model’s official compatibility list
Add 5 additional 3.5″/2.5″ SATA HDD/SSD to your DiskStation.
Configure new storage in minutes with Synology DSM’s unified toolsA
Backed by Synology’s 3-year limited hardware warranty
Plug-and-play compatibility and support for hot-swapping drives