Seagate STKP8000400 Drive 3.5E USB 3.0 External Hard Drive

Name: Seagate STKP8000400 Drive 3.5E USB 3.0 External Hard Drive
Brand: Unbranded
SKU: B093BWLBYY

Status: Seagate STKP8000400 Drive 3.5E USB 3.0 External…: Unavailable on Amazon as of 2026-10-21 16:26 UTC. Closest in-stock match (same hard drive): Seagate Expansion Desktop, $194.95 on Amazon as of 2026-10-21 12:20 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $194.95 🛒 Search eBay for this model

Bottom line: The Seagate STKP8000400 Drive 3.5E USB 3.0 External Hard Drive: 8TB of capacity for photo libraries, video projects and full system backups; main trade-off: needs the included 18W power adapter and a free wall outlet.

Unavailable on Amazon as of 2026-10-21 16:26 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same hard drive: Seagate Expansion Desktop — $194.95 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $194.95

Same hard drive: Seagate Expansion 6TB External Hard Drive HDD… — $234.98 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $234.98

Same hard drive: Seagate Expansion STKP4000400 4 TB Desktop Hard… — $237.39 on Amazon as of 2026-10-21 10:19 UTC (price may vary).

View Current Price — $237.39

Original listing (currently unavailable) → Compare to similar external storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

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. About the author →

Pros & Cons

Pros

✓ 8TB of capacity for photo libraries, video projects and full system backups
✓ Preformatted exFAT, so it works on Windows and Mac without reformatting
✓ USB 3.0 interface, with an 18-inch USB 3.0 cable included
✓ Includes Seagate Toolkit backup software for scheduled file backups
✓ Includes Seagate Rescue Data Recovery Services for lost-data recovery

Cons

✗ Needs the included 18W power adapter and a free wall outlet
✗ 18-inch cable limits where you can place it on your desk
✗ Uses a microUSB 3.0 port, not USB-C; USB-C-only laptops need an adapter
✗ Spinning hard drive, so slower and more fragile than an external SSD

Manufacturer description

Running out of room on your PC or Mac? The Seagate Expansion 8TB Desktop USB 3.0 External Hard Drive gives you 8TB of add-on storage. Use it to gather scattered files in one place or to free up space on your computer's internal drive. The Seagate drive comes preformatted as exFAT, so it works with both Windows and Mac without reformatting. It connects through a microUSB 3.0 port on the drive, and you copy files by dragging and dropping them in your file manager. No special software is needed for basic transfers. The box includes an 18-inch USB 3.0 cable, an 18W power adapter, Seagate's…

SpecPicks Verdict

SpecPicks scored Seagate STKP8000400 Drive 3.5E USB 3.0 External Hard Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Compare with similarly-priced alternatives in the external storage category before committing. 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 8TB desktop drive work with both Mac and Windows?

Yes. It ships preformatted as exFAT, which both Windows and macOS can read and write, so you can plug it into either system and use it right away.

Does this Seagate external hard drive need a power outlet?

Yes. It is a desktop drive and comes with an 18W power adapter. It needs wall power in addition to the USB 3.0 connection to your computer.

What cables and accessories come in the box?

You get an 18-inch USB 3.0 cable, an 18W power adapter, Seagate Toolkit backup software and Seagate Rescue Data Recovery Services.

What kind of port does the drive use?

The drive has a microUSB 3.0 port. The included cable connects it to a USB port on your computer. If your computer only has USB-C ports, you will need an adapter or a different cable.

What does Seagate Rescue Data Recovery cover, and is there a warranty?

Rescue Data Recovery Services is included to help you recover lost data. Coverage length and warranty terms are not stated here, so check the product listing or Seagate's site for current terms.

Key Features

Seagate Expansion desktop drive, add-on storage for your PC and Mac The Seaga
Product type: COMPUTER_DRIVE_OR_STORAGE
Compatible with Windows and Mac
Easy-to-use storage solution

Full Specifications

Brand	Seagate
Color	Black
Model Name	STKP8000400
Form Factor	3.5-inch
Media Speed	1.5 MB/s
Connectivity	USB
Model Number	STKP8000400
Product type	COMPUTER_DRIVE_OR_STORAGE
Compatibility	PC, Mac
Built-In Media	Expansion desktop hard drive, USB 3.0 cable, Power adapter, Quick Start Guide, Rescue Data Recovery Services
Hard-Drive Size	8 TB
Mfr Part Number	STKP8000400
Number of Items	1
Special Feature	Portable
Hardware Platform	Seagate
Installation Type	Plug In
Compatible Devices	Laptop
Data Transfer Rate	120 megabits_per_second
Enclosure Material	Plastic
Additional Features	Portable

Ready to buy?

Amazon shows no buyable offer for Seagate STKP8000400 Drive 3.5E USB 3.0 External… at the last check. The closest in-stock match with the same hard drive is Seagate Expansion Desktop. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $194.95