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Adata SSD 4.0TB External SD820 U3.2 Gen2 Typ C Grey

4 TB
Price in EUR including VAT
EUR167,26/1TB
Ratings
BrandMore from Adata
Test reportsVery good based on 1 test
Delivered between Thu, 30/4 and Tue, 5/5
Only 2 pieces in stock at supplier
free shipping

Colour2

Product details

The A-DATA SSD 4.0TB External SD820 U3.2 Gen2 Type C in Gray is a powerful and robust external storage device, ideal for outdoor activities. With a storage capacity of 4 terabytes, this device offers ample space for large amounts of data, whether for games, multimedia content, or important documents. The SSD is certified according to MIL-STD-810G 516.6, meaning it can withstand shocks and drops from heights of up to 1.22 meters. Additionally, it is IP68 certified, providing comprehensive protection against water and dust. It can be submerged in one meter of water for up to 60 minutes, making it a reliable companion in demanding environments. The high read speed of up to 2000 MB/s and write speed of up to 2000 MB/s ensure fast data transfer, while compatibility with various operating systems and consoles such as Xbox and PlayStation 5 offers additional flexibility.

  • MIL-STD-810G 516.6 certified for shock and drop resistance
  • IP68 certified for water and dust protection
  • Read and write speeds of up to 2000 MB/s
  • Compatible with Windows, MacOS, Linux, and Android
  • Includes USB-C to USB-C cable for easy connection.

Key specifications

USB ports
USB-C
Exact USB ports
USB-C 3.2 Gen 2 (2x)
Read transfer speed
2000 MB/s
Write transfer speed
2000 MB/s

General information

Item number
64515160
Manufacturer
Adata
Category
External SSDs
Manufacturer no.
SD820-4000G-CGY
Release date
22/10/2025

Colour

Colour
Grey
Exact colour description
Grey

Data storage properties

Storage capacity
4 TB
USB ports
USB-C
Exact USB ports
USB-C 3.2 Gen 2 (2x)
Read transfer speed
2000 MB/s
Write transfer speed
2000 MB/s
Protection type (IP code)
IP68

Voluntary climate contribution

CO₂ emissions
42,24 kg
Climate contribution
EUR 1,06

Scope of delivery

Scope of delivery
USB-C to USB-C cable

Product dimensions

Length
7.13 cm
Width
3.90 cm
Height
1.37 cm
Weight
26.50 g

Legal Notice

Product Safety

14-day cancellation right
30-day right of return
24 Months statutory warranty
Legal concerns

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Goes with

Reviews & Ratings

Statutory warranty score

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

Source: Galaxus
  • 13.OWC
    1,3 %
  • 14.Crucial
    1,5 %
  • 15.Adata
    1,8 %
  • 16.Corsair
    2 %
  • 17.SanDisk Professional
    2,5 %

Statutory 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: Galaxus
  • 1.Adata
    2 days
  • 1.Corsair
    2 days
  • 1.OWC
    2 days
  • 4.Intenso
    3 days
  • 4.Kingston
    3 days

Return rate

How often is a product of this brand in the «External SSDs» category returned?

Source: Galaxus
  • 9.WD
    1,2 %
  • 10.Verbatim
    1,5 %
  • 11.Adata
    2,1 %
  • 12.Kioxia
    2,2 %
  • 13.LaCie
    2,3 %
Source: Galaxus

Translation: machine translated
Very good80/100
PC Welt Online Logo
PC Welt OnlineSingle testReleaseMarch 2026
  • PositiveCompact form factor
  • PositiveIP68 certification
  • PositiveAttractive design
  • PositiveFirst-class performance for an SSD with 20 gigabits per second
  • PositivePermanently connected plug
  • NegativeSlows down during very long write operations

The IP68-certified SD820 SSD from Adata offers excellent performance for an SSD with 20 gigabits per second. The housing is compact and the SSD is comparatively inexpensive. However, the speed drops significantly during very long write operations.

This test report belongs to a different type: SSD 1.0TB External SD820 U3.2 Gen2 Typ C Grey (1 TB)