Terramaster USB DAS 04Bay D4-320U

3.5"
Ratings
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Product details

The TerraMaster USB DAS 04Bay D4-320U is a powerful direct-attached storage solution designed specifically for professional data management and backup requirements. With four slots for 3.5-inch SATA hard drives, this enclosure offers an impressive maximum storage capacity of up to 80 TB when using 20 TB drives per slot. The USB 3.2 Gen 2 connection enables transfer speeds of up to 10 Gbit/s, ensuring fast and efficient data access. The robust aluminum alloy construction provides durability, while the integrated 120 mm cooling fan with intelligent temperature control maintains optimal operating conditions. The tool-free drive bay design allows for easy installation and maintenance, and the status indicators on the front panel provide clear feedback on the operational status. This storage solution is compatible with various operating systems, including Windows 10/11, macOS 10.14 or newer, and Linux kernel 3.10 or higher, making it a flexible choice for diverse user needs.

  • Maximum storage capacity of 80 TB for extensive data archives
  • USB 3.2 Gen 2 with transfer speeds up to 10 Gbit/s
  • Intelligent temperature control through integrated cooling fan
  • Tool-free drive bay design for easy installation.

Key specifications

Form factor
3.5"
Number of HDD slots
4
Interface
SATA
USB ports
USB-A

General information

Item number
59346595
Manufacturer
Terramaster
Category
Hard drive enclosures
Manufacturer no.
D4-320U
Release date
14.6.2025
May include power adapter
No

Colour

Colour
Silver
Exact colour description
Grey

Material

Material group
Metal
Material
Aluminium alloy

Case properties

Form factor
3.5"
Number of HDD slots
4
Maximum possible storage capacity
80 TB
Max. data transfer rate
10000 Mbit/s
RAID configuration
JBOD

Internal interfaces

Interface
SATA

Connections

USB ports
USB-A

Power supply

Power supply
Electrical connection
Power consumption
120 W

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
63 kg
Climate contribution
CHF 1.50

Scope of delivery

Scope of delivery
USB cable

Product dimensions

Length
23 cm
Width
21 cm
Height
12.50 cm
Weight
2200 g

Package dimensions

Length
54.50 cm
Width
36 cm
Height
10.70 cm
Weight
4.35 kg

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Hard drive enclosures» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Terramaster
    Not enough data
  • 1.Axagon
    0.4 %
  • 2.ASUS
    0.5 %
  • 3.Ugreen
    0.7 %
  • 4.Delock
    0.8 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Terramaster
    Not enough data
  • 1.Digitus
    0 days
  • 1.Fantec
    0 days
  • 1.i-tec
    0 days
  • 1.Icy Box
    0 days

Return rate

How often is a product of this brand in the «Hard drive enclosures» category returned?

Source: Digitec Galaxus
  • 12.Digitus
    4.2 %
  • 13.Orico
    5.2 %
  • 14.Terramaster
    5.4 %
  • 15.LogiLink
    5.6 %
  • 16.OWC
    6.1 %
Source: Digitec Galaxus