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Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive - External - Black
Seagate

Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive - External - Black

Bottom line: The Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive ($126.69 on Amazon as of 2026-10-21 06:15 UTC): 2TB capacity handles full system backups plus large photo and video libraries; main trade-off: mechanical platter drive, so slower than an SSD for large file transfers.

$126.69

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Buy on Amazon — $126.69 Compare to similar external storage

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 2TB capacity handles full system backups plus large photo and video libraries
  • ✓ Works with Windows and Mac out of the box, no reformatting needed
  • ✓ Slim, lightweight body fits a laptop sleeve or jacket pocket
  • ✓ Bus-powered over USB 3.0, so no separate power adapter to carry

Cons

  • ✗ Mechanical platter drive, so slower than an SSD for large file transfers
  • ✗ Spinning platters are more vulnerable to drops than solid-state storage
  • ✗ USB 3.0 interface rather than a newer USB-C or Thunderbolt connection
  • ✗ Bundled backup software is Seagate's own, not a third-party standard

Manufacturer description

The Seagate Backup Plus Slim STHN2000400 is a 2TB portable hard drive built for people who need real capacity in a bag-friendly package. Its slim, lightweight enclosure connects over USB 3.0 and works interchangeably with Windows and Mac straight out of the box, so you can move between machines without reformatting or hunting for drivers. Two terabytes is enough headroom for years of tax documents, high-resolution photo libraries, video project files, and full system backups without constantly triaging what to keep. Seagate pairs the drive with backup software and encryption features, so…

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SpecPicks Verdict

SpecPicks scored Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Seagate's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How much can a 2TB Seagate Backup Plus Slim actually hold?

The drive's 2TB capacity is aimed at backup and media storage: years of documents plus growing high-resolution photo and video collections. Usable space is slightly below 2TB after formatting, which is normal for all hard drives.

Does the Seagate Backup Plus Slim work with a Mac and a PC?

Yes. Seagate lists the Backup Plus Slim as working interchangeably with Windows and Mac out of the box. If you plan to write from both operating systems regularly, check the product listing for current formatting guidance.

Does it need a separate power adapter?

No. It is a portable USB 3.0 drive that draws power over the same cable it uses for data, so a single connection to your laptop or desktop is all that's required.

Is this drive an SSD or a traditional hard drive?

It is a traditional mechanical hard drive, which is why 2TB is available at this size and price point. An SSD would be faster and more drop-resistant, but the platter design is what keeps the cost per terabyte low.

Key Features

  • Portable Design: Slim and lightweight external hard drive with USB connectivity for easy portability and storage.
  • High Capacity: 2TB digital storage capacity provides ample space for backup and media files.
  • Reliable Performance: Seagate Backup Plus Slim delivers fast read and write speeds for efficient data transfer.
  • Secure Data Protection: Encryption and backup features ensure your data is safe and easily recoverable.
  • Compatibility: Works with both Windows and Mac operating systems for versatile use.

Full Specifications

BrandSeagate
ColorBlack
Model NameSeagate Backup Plus Slim
Read Speed120 Megabytes Per Second
Form FactorPortable
ConnectivityUSB
Model NumberSTHN2000400
CompatibilityWorks with both Windows and Mac operating systems for versatile use.
High Capacity2TB digital storage capacity provides ample space for backup and media files.
Hard Disk Size2 TB
Hard-Drive Size2 TB
Mfr Part NumberSTHN2000400
Number of Items1
Portable DesignSlim and lightweight external hard drive with USB connectivity for easy portability and storage.
Special FeaturePortable
Hardware PlatformMac
Installation TypeExternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate625 Megabits Per Second
Enclosure MaterialAluminum/Glass

Ready to buy?

Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive - External - Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $126.69

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Seagate Backup Plus Slim STHN2000400 2 TB Portable Hard Drive - External - Black
$126.69
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