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DX513 Expansion Unit for Increasing Capacity of the Synology DiskStation models. Expands storage capacity by 5 bays.


Applied Models

  • DS1815+
  • DS1813+
  • DS1812+
  • DS1515+
  • DS1513+
  • DS1512+
  • DS1511+
  • DS1010+
  • DS916+
  • DS716+
  • DS716+II
  • DS713+
  • DS712+
  • DS710+
  • DS1515
  • DS715
  • NVR216
  • Some models support independent volumes creation only. Please find more details here.


Drive Bay(s)


Compatible Drive Type* (See all supported drives)

  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD

Maximum Internal Raw Capacity

50 TB (10 TB HDD x 5) (Capacity may vary by RAID types)

Hot Swappable Drive

RAID Management through Synology DSM

External Ports

eSATA port



Size (Height x Width x Depth)

157 mm x 248 mm x 233 mm


3.91 kg


Power Recovery

Synchronized with the Synology DiskStation

Power Supply Unit / Adapter


AC Input Power Voltage

100V to 240V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption*

45.1 W (Access) 
16.5 W (HDD Hibernation) 
2 W (Deep Sleep)

British Thermal Unit

153.89 BTU/hr (Access) 
56.30 BTU/hr (HDD Hibernation) 
6.82 BTU/hr (Deep Sleep)


Operating Temperature

5°C to 35°C (40°F to 95°F)

Storage Temperature

-10°C to 70°C (15°F to 155°F)

Relative Humidity

5% to 95% RH


System Fan

80 mm x 80 mm x 2 pcs

Easy Replacement System Fan

Noise Level*

21.5 dB(A)


Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%


  • FCC Class B
  • CE Class B
  • BSMI Class B


3 Years

Environment & Packaging


RoHS Compliant

Packaging Content

  • Main Unit X 1
  • User's Guide X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Expansion Cable: eSATA X 1

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Synology DX513 5 Bay Expansion Unit - Diskless

Your Custom Configuration:
  • No Hard Drive
  • No RAID
  • No RAM Upgrade
  • No RAIL
  • No Network Card
  • No Warranty
  • No SSD Cache