Synology DX517 5-Bay Expansion Unit - eSATA Expansion for DiskStation NAS
When Will I Get My Order?
Delivery timelines depend on what you purchase, your delivery location, and when your payment reflects. For the most accurate estimate, always check the Estimated Delivery Date shown during checkout.
Delivery Timeframes (Road Freight – Nationwide)
| Delivery Destination | Estimated Delivery Time |
|---|---|
| Gauteng (All Areas) | 1–3 working days |
| Western Cape | 2–4 working days |
| KwaZulu-Natal | 2–4 working days |
| Eastern Cape | 2–4 working days |
| Other Provinces | 2–5 working days |
| Regional Areas | 3–6 working days |
| Remote / Outlying Areas | 4–7 working days |
Regional Areas: Locations not serviced by daily courier routes or outside major hubs.
Remote Areas: Rural towns, farms, small settlements, mines, and low-frequency delivery zones.
How We Deliver
| Method | Description |
|---|---|
| Courier Delivery | Door-to-door delivery anywhere in South Africa using our BOBGO courier partners. |
| Volumetric Shipping | Shipping fees are calculated based on volumetric weight and courier tariff zones. |
| Payment Clearance | Orders are dispatched once payment reflects in our account. |
| Stock Availability | If an item requires additional lead time, we will notify you. |
Secure Delivery – OTP System
| Feature | Details |
|---|---|
| One-Time PIN (OTP) | Only the person with the OTP can receive the parcel. |
| Delivery Notifications | Notifications are sent when the parcel is out for delivery. |
| Authorised Receiver | You may share the OTP with someone you trust to accept the delivery on your behalf. |
Collection Options
| Collection Type | Details |
|---|---|
| Standard Collection | You will receive a Ready for Collection email. Processing time: 1–2 working days. |
| International Collections | Available for pre-arranged international orders. Collection details are provided after payment clears. |
International Orders & VAT
| Information | Details |
|---|---|
| Export Status | Server Warehouse does not hold an export code; VAT is charged on all orders. |
| VAT Refund | International customers may apply for VAT refunds via the official VAT Refund Agency after export. |
Product information, availability, and pricing are updated regularly, but supplier data may change without notice.
Some items are updated manually and may differ from the displayed status or price at the time of enquiry or checkout.
All prices and stock are confirmed with suppliers prior to acceptance or invoicing, in accordance with the Consumer Protection Act (Sections 23–25).
✔ Official Synology expansion unit
✔ Adds 5 hot-swap drive bays instantly
✔ Managed entirely through Synology DSM
✔ No migration or downtime required
✔ Quiet, power-efficient, and reliable
✔ Ideal for backups, media, and archive growth
Expand your Synology DiskStation storage instantly with the DX517 5-bay expansion unit. Add up to five additional SATA drives using a single eSATA connection, managed seamlessly through Synology DSM. Supports hot-swap drives, RAID management, and synchronized power control with the host NAS. Ideal for growing storage needs without replacing your existing system.
Compatible with popular Plus and xs+ series, including:
23 Series: DS1823xs+, DS923+, DS723+
22 Series: DS1522+
21 Series: DS1821+, DS1621xs+, DS1621+, DVA3221
20–17 Series: DS1520+, DS920+, DS720+, DS1817+, DS1517+
Older models supported with DSM requirements
Storage Expansion
Drive Bays: 5 × SATA
Drive Types Supported:
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Hot-Swap Support: Yes
RAID Management: Via Synology DSM
Connectivity
Interface: 1 × eSATA
Power Control: Synchronized with host DiskStation
Performance & Acoustics
Low Noise: ~21.5 dB(A)
System Fans: 2 × 80 mm (easy replacement)
Power
PSU: 200 W
Power Consumption:
29.9 W (active)
2.4 W (hibernation)
Physical
Dimensions: 157 × 248 × 233 mm
Weight: 3.91 kg
Warranty
3-Year Warranty (Extendable to 5 Years*)
| SKU | Synology DX517 |
|---|---|
| Estimated Shipping Weight | 6.000000 |
| Manufacturer | Synology |
| Estimated Shipping Length | 20 |
| Estimated Shipping Width | 35 |
| Estimated Shipping Height | 30 |


