Seagate 4 TB Expansion

Test 07/2019

  • Seagate 4 TB Expansion - testing
  • Seagate 4 TB Expansion - front
  • Seagate 4 TB Expansion - back
  • Seagate 4 TB Expansion - boxed
  • Seagate 4 TB Expansion - detail
  • Seagate 4 TB Expansion - detail2
  • Seagate 4 TB Expansion - seagatecrystal
  • Seagate 4 TB Expansion - seagateread
  • Seagate 4 TB Expansion - seagatewrite
Test seal: Seagate 4 TB Expansion, Rating 9.5

last modified: 05.08.2020, 18:33

We test independently. uses affiliate links. For a purchase via a link marked with a or our price comparison, we may receive a small commission.

All rating criteria details:

Read speed 30%
Write speed 30%
Compatibility 15%
Compactness 15%
Design 10%
Tested by: Alexander


Product tester


The Seagate Expansion Portable 4 TB is impressive in all aspects. On the one hand it is very compact, on the other hand it is very powerful and very quiet.


  • Very powerful
  • Low noise level
  • Low weight



360° View

A very fast hard disk that is also very compact and works very quietly.

Special features

Very high transmission speed at a very low noise level.


The compact Seagate hard drive is monochrome in plain black. The front and back are decorated with a three-dimensional pyramid pattern.


Transfer speeds of the hard disk
Transfer speeds of the hard disk

As already mentioned, the Seagate Expansion Portable with a read speed (sequential) of 143 MB/s and a write speed (sequential) of 129 MB/s in both categories offers a value in the above-average range.


The hard disk offers a modern USB 3.0 connection, but is also downward compatible. The noise level is in the low range.

We have already examined the Seagate Expansion Portable with 1 TB in the test of 1 TB external hard disks.

We have evaluated about 1900 reviews on the Internet. In summary, we can say that about 75 percent of buyers are satisfied (4 stars) or even very satisfied (5 stars). Partially (2 stars) or completely dissatisfied are a good 20 percent of the users. The average score at the time of the evaluation was 4.0 out of 5 stars.

Summary: 75% positive and 20% negative ratings

The following points were positively noted:

  • There are no permanent problems
  • Compatible with various devices (Ps4, Xbox,...)
  • High speed

The following points were noted negatively:

  • Defective after one year
  • Complicated with Mac OS
Manufacturer Seagate
Scope of delivery Hard drive, USB cable
Quality impression Good
Packaging Cardboard
Height 11,6 cm
Width 7,9 cm
Depth 2 cm
Weight 245 g
Quality of instructions Good
Manual language EN, DA, DE, ES, FR, IT, NL, NO, PL, PT, BR, RU, FI, FI, SV, CS, EL, HU, TR, ID, ZH, KO, JA
Internal Storage Size 4 TB
Ports USB
Cent / GB 2,0
Reading speed 143 MB/s
Writing speed 129 MB/s
Read speed
Write speed

All products

Check our main page to get an overview of all tested products within this category.

Overview: External Hard Drive 4TB

How do you like this product?


Malc Hennderson
Seagate 4 TB Expansion Will this HD play AVI files, etc through a USB port on a smart tv? Cheers
Hey, Malc! According to online customer reviews that we have evaluated this should be possible.
In which format is the hard disk pre-programmed?
How does the power supply work? Simple or via Y cable?
It is done with a simple USB cable.


No comments

Ask George or leave a comment

E-mail address and name are optional