Seagate

Seagate Backup Plus Portable 4TB External Hard Drive HDD (STDR4000900),Silver

Name: Seagate Backup Plus Portable 4TB External Hard Drive HDD (STDR4000900),Silver
Brand: Seagate
SKU: B0196J43TE

Status: Seagate Backup Plus Portable 4TB External Hard… (4TB hard drive): Unavailable on Amazon as of 2026-11-07 17:13 UTC. Lowest-priced in-stock match (same 4TB hard drive): ProCase 2.5" External Hard Drive Carrying Case…, $12.99 on Amazon as of 2026-11-07 05:22 UTC (price may vary). eBay sellers may still list this model new or used.

What to buy instead: the ProCase 2.5" External Hard Drive Carrying Case… at $12.99 on Amazon as of 2026-11-07 05:22 UTC (price may vary). It has the same 4TB hard drive as this listing and is the lowest of the 3 same-spec offers priced in the last 24 hours.

View Current Price — $12.99 🛒 Search eBay for this model

Bottom line: The Seagate Backup Plus Portable 4TB External Hard Drive HDD: 4TB in a pocketable enclosure - years of RAW photos, 4K footage, or game installs; main trade-off: reformatting is required before Time Machine will back up to it on a Mac.

Unavailable on Amazon as of 2026-11-07 17:13 UTC

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

Same 4TB hard drive: Seagate Backup Plus Portable 4TB External Hard… — $240.53 on Amazon as of 2026-11-07 15:15 UTC (price may vary).

View Current Price — $240.53

Same 4TB hard drive: ProCase 2.5" External Hard Drive Carrying Case… — $12.99 on Amazon as of 2026-11-07 05:22 UTC (price may vary).

View Current Price — $12.99

Same 4TB hard drive: External Hard Drive Case - GLCON Shockproof EVA… — $13.29 on Amazon as of 2026-11-07 05:28 UTC (price may vary).

View Current Price — $13.29

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-11-07

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

✓ 4TB in a pocketable enclosure - years of RAW photos, 4K footage, or game installs
✓ One-click backup plus scheduled daily, weekly, or monthly automatic runs
✓ Works with both Mac and Windows out of the box via included USB 3.0 cable
✓ 2-year limited warranty and a free 2-month Adobe CC Photography Plan membership

Cons

✗ Reformatting is required before Time Machine will back up to it on a Mac
✗ Mechanical HDD, so transfer speeds trail any portable SSD at this capacity
✗ USB 3.0 rather than USB-C - newer laptops will need an adapter or hub
✗ Usable capacity is below the advertised 4TB, as Seagate notes

Manufacturer description

Want an easy, on the go USB drive for storage? Seagate Backup Plus Portable hard drive offers 4TB The perfect complimentary laptop hard drive featuring a minimalist metal enclosure Simply plug this external hard drive for Mac and Windows into a computer via the included USB 3.0 cable to back up files with a single click or schedule automatic daily, weekly, or monthly backups; Reformatting may be required for use with Time Machine

SpecPicks Verdict

SpecPicks scored Seagate Backup Plus Portable 4TB External Hard Drive HDD 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 this Seagate 4TB drive work with a Mac?

Yes. It connects to Mac and Windows over the included USB 3.0 cable, though reformatting may be required before you can use it with Time Machine.

How much can a 4TB external hard drive actually hold?

4TB covers large RAW photo libraries, 4K video projects, game installs, or a full system image. Seagate notes that available storage capacity may vary from the advertised figure.

Does it need a separate power adapter?

No. The Backup Plus Portable is bus-powered over the included USB 3.0 cable, which is what makes it practical to carry with a laptop.

Can I schedule backups instead of running them manually?

Yes. You can back up with a single click or schedule automatic backups on a daily, weekly, or monthly cadence.

What warranty comes with the STDR4000900?

Seagate includes a 2-year limited warranty. Check the product listing for current terms and any regional differences.

Key Features

Want an easy, on the go USB drive for storage? Seagate Backup Plus Portable hard drive offers 4TB
The perfect complimentary laptop hard drive featuring a minimalist metal enclosure
Simply plug this external hard drive for Mac and Windows into a computer via the included USB 3.0 cable to back up files with a single click or schedule automatic daily, weekly, or monthly backups; Reformatting may be required for use with Time Machine
Take advantage of a complimentary 2 month membership to the Adobe Creative Cloud Photography Plan for access to awesome photo and video editing apps
Enjoy long term peace of mind with the included 2 year limited warranty
The available storage capacity may vary.

Full Specifications

Size	4TB
Brand	Seagate
Color	Silver
Model	STDR4000900
UnitCount	1
ReleaseDate	2019-08-22T00:00:01Z
Manufacturer	SEAGATE
IsAdultProduct	false
ItemPartNumber	STDR4000900

Hardware benchmark data

Ready to buy?

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

View Current Price — $240.53