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Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100
Seagate

Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100

Bottom line: The Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100 ($171.17 on Amazon as of 2026-10-20 22:15 UTC): 3 TB of capacity added instantly, no partitioning or setup software; main trade-off: 3.5-inch desktop form factor needs an AC outlet, not bus-powered.

$171.17

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Buy on Amazon — $171.17 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 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 3 TB of capacity added instantly, no partitioning or setup software
  • ✓ USB 3.0 interface for large photo, video, and backup transfers
  • ✓ Backward compatible with USB 2.0 ports on older machines
  • ✓ Power adapter and USB 3.0 cable both included in the retail box

Cons

  • ✗ 3.5-inch desktop form factor needs an AC outlet, not bus-powered
  • ✗ Not portable - the external power brick ties it to a desk
  • ✗ Windows-oriented; Mac users must reformat before Time Machine use
  • ✗ No bundled backup software, encryption, or drive management suite

Manufacturer description

The Seagate Expansion STBV3000100 is a plug-and-play desktop external hard drive that adds 3 TB of storage to your computer without any setup ritual. Connect the included power adapter and USB 3.0 cable, and Windows recognizes the drive automatically - no software installation, no driver hunt, no configuration screens. The USB 3.0 interface handles large transfers like photo libraries, video projects, and full system backups at speeds well beyond USB 2.0, and it stays backward compatible with USB 2.0 ports if you are connecting to an older machine. Inside is a 3.5-inch desktop-class drive…

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SpecPicks Verdict

SpecPicks scored Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100 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

Does the Seagate Expansion 3 TB need its own power supply?

Yes. It is a 3.5-inch desktop drive, so it uses an external power adapter rather than drawing power over USB. Seagate includes both the power adapter and the USB 3.0 cable in the retail box.

Will it work on a computer that only has USB 2.0 ports?

Yes. The USB 3.0 host interface is backward compatible with USB 2.0, so the drive connects and works on older systems, though transfer speeds are limited to USB 2.0 rates.

Do I have to install software to use it?

No. Seagate states the drive is automatically recognized by Windows with no software installation required - plug in the power adapter and USB cable and it appears as a drive.

Can I use this Seagate Expansion with a Mac?

The drive ships formatted for Windows, so Mac users typically reformat it in Disk Utility before using it with Time Machine. Check the product listing for current macOS compatibility notes.

What warranty does the STBV3000100 come with?

Warranty terms vary by region and seller. Check the Amazon product listing or Seagate's support site for the current warranty period covering the STBV3000100.

Key Features

  • Easy and simple to use - simply plug in the power adapter and USB cable
  • Fast file transfers with USB 3.0
  • Compatible with USB 3.0 and USB 2.0
  • Instantly add 3 TB of storage space to your computer
  • Simple plug-and-play connectivity via USB cable
  • Power supply and USB 3.0 cable included

Full Specifications

BrandSeagate
ColorBlack
Model NameSeagate Expansion
Form Factor3.5-inch
Media Speed1
ConnectivityUSB
Model NumberSTBV3000100
Built-In MediaPower Adapter, USB Cable
Hard-Drive Size3 TB
Mfr Part NumberSTBV3000100
Number of Items1
Special FeaturePortable
Installation TypePlug In
Compatible DevicesDesktop
Data Transfer Rate5000 megabits_per_second
Additional FeaturesPortable
Hard Disk InterfaceUSB 3.0
Warranty Description1 year limited warranty
Customer Package TypeStandard Packaging
Hard Disk DescriptionExternal

Ready to buy?

Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100 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 — $171.17

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STBV3000100
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