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Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400)

Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400)

Bottom line: The Seagate Expansion 12TB External Hard Drive HDD ($445.36 on Amazon as of 2026-10-21 12:20 UTC): 12TB desktop capacity for photo, video and game libraries; main trade-off: needs a wall power adapter, so it is not travel-portable.

$445.36

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Buy on Amazon — $445.36 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.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 12TB desktop capacity for photo, video and game libraries
  • ✓ USB 3.0 transfer speeds, no software install needed
  • ✓ Plug-and-play on Windows and Mac out of the box
  • ✓ Includes Rescue Data Recovery Services with the warranty
  • ✓ Ships with 18-inch USB 3.0 cable and 18W power adapter

Cons

  • ✗ Needs a wall power adapter, so it is not travel-portable
  • ✗ Requires reformatting before Apple Time Machine backups
  • ✗ USB 3.0 only, no USB-C or Thunderbolt connector
  • ✗ Spinning HDD, so far slower than an external SSD

Manufacturer description

Ideal for the home, office, or dorm, Seagate Expansion desktop drive offers enormous desktop storage for photos, movies, music, and more. Backing up and transferring content is incredibly easy—just drag and drop! To get set up, connect the USB hard drive to Windows or Mac—no software required. For Apple Time Machine, simply reformat. Included is an 18-inch USB 3.0 cable and 18W power adapter.

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SpecPicks Verdict

SpecPicks scored Seagate Expansion 12TB External Hard Drive HDD 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.

Key Features

  • Easy-to-use desktop hard drive—simply plug in the power adapter and USB cable
  • Fast file transfers with USB 3.0
  • Drag-and-drop file saving right out of the box
  • Automatic recognition of Windows and Mac computers for simple setup (Reformatting required for use with Time Machine)
  • Enjoy peace of mind with the included limited warranty and Rescue Data Recovery Services

Full Specifications

BrandSeagate
ColorDESKTOP
Item Width4.2 centimeters
Model NameSeagate Expansion
Read Speed123 megabytes_per_second
Unit Count1 Count
Form Factordesktop
Item Length17.87 centimeters
Media Speed123 megabytes per second
ConnectivityUSB
Model NumberSTKP12000400
CompatibilityMac
Built-In MediaExpansion Desktop External Drive 12TB USB3.0
Item Type NameSeagate Expansion STKP12000400 External Hard Drive 12TB 3.5 Inch USB 3.0 PC Notebook with 2 Year Rescue Service
Hard-Drive Size12 TB
Mfr Part NumberSTKP12000400
Number of Items1
Special FeaturePortable
Hardware PlatformPC
Installation TypePlug In

Ready to buy?

Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $445.36

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400)
$445.36
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