Seagate Backup Plus 4 TB USB 3.0 Desktop External Hard Drive for Mac with Mobile Device Backup(STDU4000100)

Name: Seagate Backup Plus 4 TB USB 3.0 Desktop External Hard Drive for Mac with Mobile Device Backup(STDU4000100)
Brand: Unbranded
SKU: B00HFRWWAW

Status: Seagate Backup Plus 4 TB USB 3.0 Desktop… (4TB hard drive): Unavailable on Amazon as of 2026-10-18 16:25 UTC. 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). eBay sellers may still list this model new or used.

View Current Price — $189.99 🛒 Search eBay for this model

Bottom line: The Seagate Backup Plus 4 TB USB 3.0 Desktop External Hard Drive: Ships Mac-formatted, so Time Machine backups start without reformatting; main trade-off: needs the HFS+ driver installed before a Windows PC can use it.

Unavailable on Amazon as of 2026-10-18 16:25 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 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: Seagate Backup Plus 4TB Desktop External Hard… — $199.99 on Amazon as of 2026-10-21 14:16 UTC (price may vary).

View Current Price — $199.99

Same 4TB hard drive: Seagate Backup Plus Hub for Mac 4TB External… — $237.12 on Amazon as of 2026-10-21 16:15 UTC (price may vary).

View Current Price — $237.12

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

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

✓ Ships Mac-formatted, so Time Machine backups start without reformatting
✓ 4 TB capacity holds years of photo libraries and full system snapshots
✓ USB 3.0 interface speeds up large video and photo transfers
✓ Seagate Dashboard builds scheduled, customized backup plans automatically
✓ Optional adapter upgrades the drive to Thunderbolt or FireWire 800

Cons

✗ Needs the HFS+ driver installed before a Windows PC can use it
✗ Thunderbolt and FireWire 800 adapters are sold separately, not included
✗ Desktop form factor, so it is not a bus-powered portable drive
✗ Usable storage lands below the advertised 4 TB after formatting

Manufacturer description

The Seagate Backup Plus 4 TB desktop external hard drive arrives formatted for Mac out of the box, so you can point Time Machine at it within minutes of unboxing and start protecting your digital life locally. Its 4 TB of desktop-class capacity gives you room for years of photo libraries, video projects, and full system snapshots, while USB 3.0 connectivity keeps large transfers from turning into an afternoon-long wait. The included Seagate Dashboard software lets you build customized backup plans instead of manually dragging folders, and its Save feature can pull user-generated content down…

SpecPicks Verdict

SpecPicks scored Seagate Backup Plus 4 TB USB 3.0 Desktop 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 Backup Plus 4 TB work with Time Machine?

Yes. The drive is formatted for Mac out of the box, which makes it compatible with Time Machine software for local backups with no reformatting step.

Can I use this drive with a Windows PC too?

Yes, but not out of the box. Install the included HFS+ driver and you can use the drive interchangeably between Mac and PC computers.

Do I actually get the full 4 TB of storage?

Not quite. Seagate notes that the available storage capacity may vary, so expect usable space to come in under the advertised 4 TB figure.

What connection does it use, and can I upgrade it?

It connects over USB 3.0 as included. An additional adapter is available separately to upgrade the drive to Thunderbolt or FireWire 800.

Key Features

Create easy customized backup plans with included Seagate Dashboard software
Quick file transfer with USB 3.0 connectivity
Formatted for Mac out of the box; install the HFS+ driver and use the drive interchangeably between Mac and PC computers
Additional adapter available to upgrade from included USB 3.0 to Thunderbolt or FireWire800
The available storage capacity may vary.

Full Specifications

Brand	Seagate
Model Name	Backup Plus Desktop
Unit Count	1 Count
Form Factor	Portable
Connectivity	USB
Model Number	STDU4000100
Compatibility	PC, Mac
Built-In Media	Backup Plus for Mac® Desktop Drive 4TB USB3.0
Hard Disk Size	4 TB
Hard-Drive Size	4 TB
Mfr Part Number	STDU4000100
Number of Items	1
Hardware Platform	PC;Mac
Installation Type	External Hard Drive
Compatible Devices	Desktop
Data Transfer Rate	5000 megabits_per_second
Hard Disk Interface	USB 3.0
Warranty Description	2 year limited warranty
Hard Disk Description	External
Hard Disk Form Factor	3.5 inches

Ready to buy?

Amazon shows no buyable offer for Seagate Backup Plus 4 TB USB 3.0 Desktop… 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