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Seagate STKP8000400

Seagate Expansion Desktop 8TB STKP8000400 external hard drive, front view on white background

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Expansion Desktop 8TB, black

Capacity:
8TB
Interface:
USB 3.0 (Type-A on the host end)
Included cable:
18-inch (45.72cm) USB 3.0 Type-A cable

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Package details

Model: STKP8000400

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing
Included essentials:
18-inch (45.72cm) USB 3.0 Type-A cable

Important limit: Mains-powered desktop design, not a portable bus-powered drive

How many units?

Confirm condition, quantity and included accessories on the retailer’s listing.

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Specifications checked November 5, 2026. Full product details

Size and package

Size and placement

Dimensions (L x W x D)
178.75mm/7.04in x 41.90mm/1.65in x 125.0mm/4.92in
Weight
1176g/2.59lb

In the box

18-inch (45.72cm) USB 3.0 Type-A cable

Manufacturer specifications

Seagate Expansion Desktop 8TB External Hard Drive (STKP8000400)

An 8TB 3.5-inch external desktop hard drive with USB 3.0, an 18W power adapter and bundled Toolkit backup software for straightforward add-on storage.

Which version should you buy?

Selected package: Expansion Desktop 8TB (STKP8000400), black.

Selected package

  • Expansion Desktop 8TB

    This page

    Model: STKP8000400

    Best for
    Straightforward extra desktop storage.

Related models and generations

These are different products. Check their specifications separately.

  • Expansion Desktop with software 8TB Model: STKR8000400

    Same hardware sold in the with-software SKU line (STKR8000400 in the data sheet).

    Buyers who want the software bundle SKU.

  • Expansion Desktop 20TB Model: STKP20000400

    Higher-capacity 20TB version of the same enclosure design.

    Buyers needing more capacity in one box.

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • Expansion Desktop (3.5-inch, mains powered) and Expansion Portable (2.5-inch, bus powered) are different product lines.
  • Confirm the capacity on the box: the same enclosure design spans 4TB to 28TB.

Why people pick it

  • Simple plug-and-play add-on storage with no software install needed for basic use
  • USB 3.0 with an 18-inch cable suits desktop placement next to a PC or NAS
  • Includes Seagate Toolkit backup software and Rescue Data Recovery Services

Know before you buy

  • Mains-powered desktop design, not a portable bus-powered drive
  • USB 3.0 (5 Gbps) interface rather than USB 3.2 Gen 2 or USB-C
  • 1-year limited warranty, shorter than NAS-grade internal drives
  • No hardware encryption or RAID features

Full specifications

Capacity8TB
InterfaceUSB 3.0 (Type-A on the host end)
Included cable18-inch (45.72cm) USB 3.0 Type-A cable
PowerExternal 18W power adapter
Form factor3.5-inch desktop external drive (mains powered, not bus powered)
Dimensions (L x W x D)178.75mm/7.04in x 41.90mm/1.65in x 125.0mm/4.92in
Weight1176g/2.59lb
SetupPlug-and-play; automatically recognized by Windows and macOS (reformatting may be required for Time Machine)
SoftwareSeagate Toolkit backup software for on-demand and scheduled backup of Windows files
Data recoveryIncludes Rescue Data Recovery Services (not available in all countries)
System requirementsCompatible with most Windows and macOS systems (see seagate.com/os); a USB 3.0 port is required for USB 3.0 transfer speeds
Warranty1-year limited warranty
In the boxExpansion desktop hard drive, 18-inch USB 3.0 Type-A cable, 18W power adapter, quick start guide

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

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