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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

Status: Seagate One Touch (4TB hard drive): Unavailable on Amazon as of . Closest in-stock match (same 4TB hard drive): Seagate Portable 4TB External Hard Drive HDD, $189.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary). A matching listing is live on eBay.

View Current Price — $189.99 🛒 See live eBay price

Bottom line: The Seagate One Touch: Password-activated hardware encryption built in, no third-party software needed; main trade-off: USB 3.0 Type-A only; USB-C laptops need an adapter you buy separately.

Unavailable on Amazon as of

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

Same 4TB hard drive: Seagate Portable 4TB External Hard Drive HDD — $189.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $189.99

Same 4TB hard drive: WD 4TB My Passport — $179.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $179.99

Same 4TB hard drive: Seagate One Touch 4TB External Hard Drive HDD — $199.99 on Amazon as of 2026-10-21 16:15 UTC (price may vary).

View Current Price — $199.99
Original listing (currently unavailable) → 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.

Pros & Cons

Pros

  • ✓ Password-activated hardware encryption built in, no third-party software needed
  • ✓ Includes Rescue Data Recovery Services plus a limited warranty
  • ✓ One-click backup or scheduled daily, weekly, monthly runs

Cons

  • ✗ USB 3.0 Type-A only; USB-C laptops need an adapter you buy separately
  • ✗ Spinning platter, so far slower than an external SSD
  • ✗ May need reformatting before Time Machine will use it
  • ✗ Mylio and Dropbox trials expire one year after registration

Manufacturer description

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

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SpecPicks Verdict

SpecPicks scored Seagate One Touch 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 One Touch 4TB work with a Mac?

Yes. The included USB cable works with Windows, Mac, and Chromebook laptops. If you want to use it with Time Machine, you may need to reformat the drive first.

Will it plug into a USB-C laptop?

Not directly. The drive uses USB 3.0 with the included cable, so a USB-C machine needs a separate adapter that is not included in the box.

How does the password protection work?

The One Touch uses password-activated hardware encryption, so the drive itself locks the data behind a passphrase you set rather than relying on software running on the host PC.

What happens if the drive fails and I lose data?

Seagate includes Rescue Data Recovery Services and a limited warranty with this model. Check the product listing for current coverage length and terms in your region.

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

Ready to buy?

Amazon shows no buyable offer for Seagate One Touch at the last check. The closest in-stock match with the same 4TB hard drive is Seagate Portable 4TB External Hard Drive HDD. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $189.99

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Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400)
In-stock match — $189.99 →