Skip to main content
Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400)
Seagate

Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400)

By , Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

$184.99

As an Amazon Associate, SpecPicks earns from qualifying purchases.

View Current Price on Amazon → Compare to similar external storage

*Price sourced from Amazon.com. Last updated 2026-09-04. Price and availability subject to change.

Bottom line: The Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) is a niche pick — read recent reviews before buying in the external storage category, priced around $184.99. Compare close alternatives before committing.

This external drive includes a USB cable that works seamlessly with Windows, Mac, and Chromebook laptops (purchase adapter separately for use with USB-C computers. Reformatting may be required for use with Time Machine). The perfect complement to personal aesthetic, this portable external hard drive features a minimalist brushed metal enclosure. Great as a laptop hard drive or PC hard drive, simply plug in via USB 3.0 to back up with a single click or schedule automatic daily, weekly, or monthly backups

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored Seagate One Touch, 4TB, Password Activated Hardware encryption… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis 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. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

  • ✓ Backed by Seagate's warranty and support channels
  • ✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

  • This external drive includes a USB cable that works seamlessly with Windows, Mac, and Chromebook laptops (purchase adapter separately for use with USB-C computers. Reformatting may be required for use with Time Machine).
  • The perfect complement to personal aesthetic, this portable external hard drive features a minimalist brushed metal enclosure.
  • Great as a laptop hard drive or PC hard drive, simply plug in via USB 3.0 to back up with a single click or schedule automatic daily, weekly, or monthly backups
  • Organize your photos with a Mylio Photos complementary subscription and enjoy automatic backups with a Dropbox Backup Plan free trial. (Must redeem within one year of drive registration. Not available in all countries. Trial subscriptions are subject to change in vendor or terms. Please refer to drive packaging for official offer.)
  • Enjoy long-term peace of mind with the included limited warranty and Rescue Data Recovery Services.

Full Specifications

Size4TB
BrandSeagate
ColorHDD
ModelSTKZ4000400
Warranty2 year manufacturer
UnitCount1
ReleaseDate2023-07-02T00:00:01Z
ManufacturerSeagate
ItemPartNumberSTKZ4000400

Ready to buy?

Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-09-04. Price and availability subject to change.

Related External Storage

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400)
$184.99
View on Amazon →