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TERRAMASTER D4-320 - 4-bay hard drive enclosure, USB 3.2 Gen2 10 Gbps, hot-swappable (diskless)
Hard drive enclosures

TERRAMASTER D4-320

The D4-320 adds four separate drive bays to your computer through a single USB-C connection. It is plug-and-play, hot-swappable and quiet enough for a desk.

Bays
4 x SATA
Interface
USB 3.2 Gen2, 10 Gbps
RAID
No (4 individual disks)
Drive format
3.5″ / 2.5″ HDD, 2.5″ SSD
  • Four bays, up to 88 TB (22 TB per drive)
  • USB 3.2 Gen2, up to 1,016 MB/s with 4 drives
  • Plug-and-play, no drivers needed
  • Hot-swappable drives
  • Below 21 dB(A) in standby
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Day to day

  1. 1USB 3.2 Gen2 at up to 10 Gbps reaches 1,016 MB/s with four hard drives, and 510 MB/s from a single SSD.
  2. 2Four bays of up to 22 TB each give up to 88 TB of directly attached storage.
  3. 3Each drive appears individually, plug-and-play on Windows, macOS and Linux without drivers.
  4. 4Hot swapping lets you change a drive without switching the enclosure off.
  5. 5Tool-free trays with Push-Lock secure each drive as soon as it is inserted.
  6. 6A temperature-controlled fan, sound-absorbing panels and vibration damping keep standby noise below 21 dB(A).

Real-life uses

Rotating backups

Keep separate backup drives in each bay and swap them without powering down.

Creative archive

Store finished photo and video projects across four large drives.

Mac or PC expansion

Add up to 88 TB to a compact computer through one USB-C port.

Right for you if…

Photographers, video makers and home users who need lots of external storage with individual drive access.

Check before you buy

Supplied diskless; the D4-320 has no RAID function, so each drive works on its own. It is compatible with USB 3.0, 3.1 and 3.2 ports as well as Thunderbolt 3 and 4.

Specifications

Drive bays
4
Interface
USB 3.2 Gen2 Type-C, 10 Gbps
Speed (4 HDD)
Up to 1,016 MB/s
Speed (1 SSD)
Up to 510 MB/s
Maximum capacity
88 TB (4 x 22 TB)
RAID
Not supported, individual disks
Compatible drives
3.5″ / 2.5″ SATA HDD, 2.5″ SATA SSD
Standby noise
Below 21 dB(A)
Drives included
No (diskless)

Frequently asked questions

Does the D4-320 support RAID?+

No. It works with four individual disks; for hardware RAID, choose a model such as the D2-320 or D5-310.

Can I swap drives while it is running?+

Yes. The D4-320 supports hot swapping.

Will it work with a Thunderbolt port?+

Yes. Its USB-C interface is compatible with USB 3.0, 3.1, 3.2 and Thunderbolt 3 and 4 ports.

TERRAMASTER D4-320

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In the same family

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