Synology DX525 ,5-Bay 3.5" Diskless Expansion NAS ,Expansion Unit
The Synology DX525 is designed as a versatile storage enclosure that supports both 2.5" and 3.5" hard drives, accommodating up to 5 drives for substantial data storage needs. With a hot-swap capability, users can easily add or replace drives without downtime, enhancing convenience and efficiency in data management. The unit features a USB-C interface for quick and easy connectivity, making it compatible with modern devices while ensuring a reliable data transfer experience. Additionally, the built-in devices include a status LED for monitoring and dual 92 mm fans that maintain optimal operating conditions across a wide temperature range from 0°C to 40°C, all while operating in environments with humidity levels from 5% to 95%. Its Plug-and-Play design simplifies installation, making it an ideal choice for both personal and professional use, while a Kensington security slot helps safeguard valuable data storage.
The Synology DX525 is designed as a versatile storage enclosure that supports both 2.5" and 3.5" hard drives, accommodating up to 5 drives for substantial data storage needs. With a hot-swap capability, users can easily add or replace drives without downtime, enhancing convenience and efficiency in data management. The unit features a USB-C interface for quick and easy connectivity, making it compatible with modern devices while ensuring a reliable data transfer experience. Additionally, the built-in devices include a status LED for monitoring and dual 92 mm fans that maintain optimal operating conditions across a wide temperature range from 0°C to 40°C, all while operating in environments with humidity levels from 5% to 95%. Its Plug-and-Play design simplifies installation, making it an ideal choice for both personal and professional use, while a Kensington security slot helps safeguard valuable data storage.
The Synology DX525 is designed as a versatile storage enclosure that supports both 2.5" and 3.5" hard drives, accommodating up to 5 drives for substantial data storage needs. With a hot-swap capability, users can easily add or replace drives without downtime, enhancing convenience and efficiency in data management. The unit features a USB-C interface for quick and easy connectivity, making it compatible with modern devices while ensuring a reliable data transfer experience. Additionally, the built-in devices include a status LED for monitoring and dual 92 mm fans that maintain optimal operating conditions across a wide temperature range from 0°C to 40°C, all while operating in environments with humidity levels from 5% to 95%. Its Plug-and-Play design simplifies installation, making it an ideal choice for both personal and professional use, while a Kensington security slot helps safeguard valuable data storage.
The Synology DX525 is designed as a versatile storage enclosure that supports both 2.5" and 3.5" hard drives, accommodating up to 5 drives for substantial data storage needs. With a hot-swap capability, users can easily add or replace drives without downtime, enhancing convenience and efficiency in data management. The unit features a USB-C interface for quick and easy connectivity, making it compatible with modern devices while ensuring a reliable data transfer experience. Additionally, the built-in devices include a status LED for monitoring and dual 92 mm fans that maintain optimal operating conditions across a wide temperature range from 0°C to 40°C, all while operating in environments with humidity levels from 5% to 95%. Its Plug-and-Play design simplifies installation, making it an ideal choice for both personal and professional use, while a Kensington security slot helps safeguard valuable data storage.
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The lowest price for Synology DX525 ,5-Bay 3.5" Diskless Expansion NAS ,Expansion Unit right now is $807.00 at Device Deal, compared across 18 retailers.
The all-time low was $744.31 on 6 June 2026 — today's price is 8% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 2 Nov 2026.
Last updated at 02/11/2026 04:20:33
Synology DX525 NAS Expansion Unit [5-Bay/SATA Support/Synology DiskStation Only]
Free delivery
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Synology DX525 ,5-Bay 3.5" Diskless Expansion NAS ,Expansion Unit
7-day returns
Synology DX525 Expansion 5 bay unit
Delivery $16.50
Synology Expansion Unit DX525 5-Bay Diskless NAS Expansion Compatible Models
Free delivery
Synology DX Series Expansion Unit 5-Bay Diskless Expansion (DX525) 5 bays, SATA HDD/SSD, 2.5"/3.5" drive support, hot-swap, desktop, 1x PSU,
Delivery between 5–14 Nov $12
Synology DX525 Expansion Unit, 5-Bay Hot-Swappable Storage, 1x eSATA Port, RAID Management, Quiet 20.4dB, 90W PSU, Compatible with DSM Systems, Reliab
Delivery between 5–12 Nov $82.36
Synology Expansion DX525 5-Bay 3.5" Diskless NAS
Delivery $12.69
Synology Expansion DX525 5-Bay 3.5" Diskless NAS
Free delivery between 4–9 Nov
Synology Expansion DX525 5-Bay 3.5" Diskless NAS
Delivery $12.69
Synology Expansion DX525 5-Bay 3.5" Diskless NAS
Delivery between 5–10 Nov $15
| Supported storage drive interfaces | Serial ATA |
| Cable lock slot type | Kensington |
| Certification | FCC CE BSMI UKCA EAC VCCI RCM KC BIS |
| Number of power supply units | 1 |
| AC input frequency | 50/60 Hz |
Synology DX525 NAS Expansion Unit [5-Bay/SATA Support/Synology DiskStation Only]
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Synology DX525 ,5-Bay 3.5" Diskless Expansion NAS ,Expansion Unit
7-day returns
Synology DX525 Expansion 5 bay unit
Delivery $16.50
Synology Expansion Unit DX525 5-Bay Diskless NAS Expansion Compatible Models
Free delivery
Synology DX Series Expansion Unit 5-Bay Diskless Expansion (DX525) 5 bays, SATA HDD/SSD, 2.5"/3.5" drive support, hot-swap, desktop, 1x PSU,
Delivery between 5–14 Nov $12
| Supported storage drive interfaces | Serial ATA |
| Cable lock slot type | Kensington |
| Certification | FCC CE BSMI UKCA EAC VCCI RCM KC BIS |
| Number of power supply units | 1 |
| AC input frequency | 50/60 Hz |
