Rank #2 in Best 5TB External Hard Drive 2026: 10 Ranked, Three Spec Sheets That Contradict Themselves
Seagate 5TB Portable Hard Drive, USB 3.0 (STGX5000400)
Price and rating as shown on Amazon when we collected them. Both change.
The Seagate 5TB Portable Hard Drive (STGX5000400) is number two in this guide and by far the most-reviewed drive in it: 4.5 out of 5 from 265,604 ratings, at £149.99. It is a pocket-sized unit — 2.5-inch form factor, 260 g, USB 3.0 connection — sold as an Amazon Exclusive with a 46cm USB cable, a two-year limited warranty and two years of rescue data recovery services.
It earns its place on the same ground as everything else in this list: the specification fields do not agree with each other. Capacity is stated three times and once in the wrong field — 5 TB under Digital Storage Capacity, 5 TB under Hard-Drive Size, and 5 TB again under Cache Memory Installed Size, which describes a buffer rather than a disk. Form factor is given as 18 Inches in one field and 2.5-inch in another, on an item measuring 11.7 x 8 x 2 centimetres. And the transfer figures run from 120 Megabytes Per Second (Read Speed, Media Speed) up to 5120 Megabits Per Second (Data Transfer Rate) — 640 MB/s, the ceiling of the USB 3.0 connection rather than a speed this drive reaches. Everything on this page comes from the Amazon listing, not from our own testing.
How those 265,604 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £149.99 |
|---|---|
| Rating | 4.5 out of 5, from 265,604 ratings |
| Digital storage capacity | 5 TB (Hard-Drive Size separately reads 5 TB) |
| Hard disk form factor (as listed) | 18 Inches (Form Factor, separately, says 2.5-inch; the item measures 11.7 x 8 x 2 centimetres) |
| Cache memory installed size (as listed) | 5 TB |
| Read speed | 120 Megabytes Per Second (Media Speed gives the same figure) |
| Data transfer rate (as listed) | 5120 Megabits Per Second — 640 MB/s, the USB 3.0 bus ceiling |
| Hard disk rotational speed (as listed) | 7200 |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“I've used Seagate Hard Drives for years. This seemed good buy. As described. It formatted with my Xbox Series as hoped. Was unsure as this wasn't the Xbox branded one and specs were slightly different but still suitable and compatible as Rufus advised. Easy way to increase game storage. Series enhanced games will need to be moved to internal storage to play but old gen games usually play off these.”
Verified purchase“Massive storage and easy to use. You may lament the time it takes to transfer files but this is a limitation of PCs, USB etc. and not of this device. Best advice is to back up all your files frequently and then keep this drive at a remote, secure location”
What it is up against
The rivals it was ranked against in Best 5TB External Hard Drive 2026: 10 Ranked, Three Spec Sheets That Contradict Themselves.
Questions people ask
What capacity is this Seagate drive?
Digital Storage Capacity and Hard-Drive Size both read 5 TB, matching the 5TB in the product name. The same listing also records 5 TB under Cache Memory Installed Size, a field that normally describes a small buffer rather than the size of the disk.
Is the drive really 18 inches?
The listing gives Hard Disk Form Factor as 18 Inches while Form Factor says 2.5-inch, and the item dimensions are 11.7 x 8 x 2 centimetres at 260 g. Those three cannot all describe the same product.
How fast does it transfer files?
Read Speed is given as 120 Megabytes Per Second and Media Speed as 120 megabytes_per_second, while Data Transfer Rate is given as 5120 Megabits Per Second. 5120 Mb/s works out at 640 MB/s, which is the USB 3.0 connection ceiling rather than a figure for the disk.
What speed does the disk spin at?
The listing states Hard Disk Rotational Speed as 7200, alongside a 2.5-inch form factor, a 260 g weight and a Portable product feature.
Can I use it with a Mac or a games console?
The bullets say it is designed to work with Windows or Mac, and the Hardware Platform field lists Mac and PC, but Mac compatibility is described separately as 'Reformat compatible'. The listing also names Microsoft Xbox 360, Xbox One, Xbox Series S, Xbox Series X and Sony PlayStation 4 as compatible console models.
What is in the box and what does the warranty cover?
The listing refers to a 46cm USB cable, a two-year limited warranty and two-year rescue data recovery services, and describes the drive as an Amazon Exclusive. It says no software is needed — the drive is detected when connected.
Comments
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