# Seagate Basic 4TB Portable External Hard Drive

Source: https://www.ranked10.co.uk/tech/best-4tb-external-hard-drives/seagate-basic-4tb-portable
Ranked #2 in "Best 4TB External Hard Drive 2026: 9 Ranked, Specs Compared": https://www.ranked10.co.uk/tech/best-4tb-external-hard-drives

- Price: £161.92 (checked on Amazon UK on 2026-09-18)
- Amazon rating: 4.6 from 15,379 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B081VG3RXV?tag=ranked10-21

The Seagate Basic 4TB is a portable external hard drive with a USB 3.0 cable, listed at £161.92 and ranked second in this guide. It carries a 4.6 rating from 15,379 ratings, and its three bullet points cover familiar ground: a lightweight minimalist shell, drag-and-drop file transfer, and plug-and-play setup on Windows, with a reformat needed for Mac. It also sits near the top of the guide's price range — the nine drives here run from £89.91 to £169.94.

Three fields in its own spec table do not sit easily together. The rotational speed is given as 7200 RPM, the form factor as 2.5 Inches, and the weight as 260 g; a portable that light is an unusual home for a 7200 RPM mechanism. The dimensions field makes it stranger still, quoting 29.7 x 20.3 x 5.1 cm — nearly 30 cm long, closer to a desktop enclosure than a pocket drive. The cache memory installed size is listed as "4", with no unit attached. One review on the same listing describes a "5TB external hard drive" moving data at "130-140 MB/s", against the 4TB capacity and 120 MB/s read speed in the table above it. What does hold up is the 4TB figure, which appears in both the Digital Storage Capacity and Hard-Drive Size fields, and the read speed of 120 MB/s, which matches the listed 960 Mbps transfer rate exactly. Everything on this page comes from the Amazon listing, not from testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £161.92 |
| Rating | 4.6 out of 5 from 15,379 ratings |
| Capacity | 4 TB |
| Hard Disk Rotational Speed | 7200 RPM (as listed) |
| Hard Disk Form Factor | 2.5 Inches (as listed) |
| Read Speed | 120 megabytes per second (as listed) |
| Data Transfer Rate | 960 megabits per second (as listed) |
| Item Dimensions L x W x Thickness | 29.7 x 20.3 x 5.1 centimetres (as listed) |
| Item Weight | 260 g |

## Questions people ask

**What capacity is the Seagate Basic, and does the listing agree with itself on it?**

4 TB. The figure appears in both the Digital Storage Capacity and Hard-Drive Size fields, the one specification that stays consistent across the listing.

**Does the Seagate Basic run at 7200 RPM?**

The rotational speed field says 7200 RPM. The same listing gives a 2.5-inch hard disk form factor and a weight of 260 g, which sit awkwardly with a 7200 RPM mechanism. Both figures are as listed.

**How fast is the Seagate Basic?**

Read speed is listed as 120 megabytes per second, and the data transfer rate as 960 megabits per second — the same 120 MB/s expressed in two different units.

**Does the Seagate Basic work with a Mac?**

The listing calls it an external hard drive for Windows with a plug-and-play USB 3.0 cable, and says to reformat for Mac. Its compatible devices field names Desktop, Laptop, Mac, Smartphone and Tablet.

**How big is the Seagate Basic?**

Item weight is given as 260 g. The dimensions field reads 29.7 x 20.3 x 5.1 cm, roughly 30 cm long, alongside a form factor of 2.5 Inches elsewhere in the same listing.

**What do the ratings show?**

4.6 out of 5 from 15,379 ratings. The star bar chart on the listing adds up to 100 responses: 79 five-star, 13 four-star, 4 three-star, 1 two-star and 3 one-star.