5 Bays, Diskless, Desktop
+Five drive bays to add capacity to a compatible NAS
+Desktop form factor for placement on a shelf or desk
+Ships diskless, so you choose your own drives
−Expansion unit only, it does not work as a standalone NAS
$519.99
as of 11/04/2026 09:07 PST - DetailsProduct details
Synology 5-Bay Expansion Unit DX525 (Diskless)
$519.99as of 11/04/2026 09:07 PST - Details
View on AmazonPros
+Five drive bays to add capacity to a compatible NAS
+Desktop form factor for placement on a shelf or desk
+Ships diskless, so you choose your own drives
Cons−Expansion unit only, it does not work as a standalone NAS
Compared with the 11 NAS Devices on this page+5 bays: the most bays of the 17 here
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