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Key Features
- 12TB HDD storage with USB 3.0 connection
- High-capacity drive for storing large files
- Works with Windows 10 or higher and Mac OS X 10.12 or higher
- Compact desktop design in black for easy placement
Key Specifications
- Brand:
- Seagate
- Model Number:
- STKP12000400
- Storage Capacity:
- 12TB
- Connections:
- USB 3.0 - USB Micro-B to USB A
- Type:
- HDD
Connections
- Connection Type:
- USB Micro-B
General Information
- Colour:
- Black
- System Requirements:
- Windows ® 10 or higher, or Mac OS ® X 10.12 or higher
- What's In The Box:
- Seagate® Expansion desktop hard drive, 18 inch (46 cm) USB 3.0 cable, 18W power adapter, Quick Start Guide
Warranty
- Manufacturer's Warranty:
- 1 Year
Connections
- Connection Type:
- USB Micro-B
Warranty
- Manufacturer's Warranty:
- 1 Year
Product Dimensions
- Product Height (mm):
- 178.75
- Product Width (mm):
- 41.9
- Product Depth (mm):
- 125
- Product Weight (g):
- 1.176
Box Dimensions
- Box Height (mm):
- 77
- Box Width (mm):
- 212
- Box Depth (mm):
- 218
- Box Weight (kg):
- 1
Product Reviews of Seagate 12TB Expansion Desktop Hard Drive

Overall Rating Snapshot
4 out of 5 stars from 1 review
100% of users recommend this product
Anonymous
Confirmed purchase 26 January 2023
Published on 13 February 2023
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
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The below information is AI generated based on Australian websites information around this item. We have done our best to ensure its accuracy but suggest verifying any information within this tab before purchasing.
At a glance
The Seagate 12TB Expansion Desktop Hard Drive is a simple external storage option for people who need a lot of space for backups, photos, videos and large file collections. It is best for home users, creators and small offices wanting easy plug-and-play storage. Its biggest strengths are high capacity and simple setup, but it is less portable because it needs external power.
What it’s great for
- Home Backups
- Media Libraries
- Photo and Video Storage
- Large File Archives
- Desktop Expansion Storage
Where it works best
- Home Office
- Study
- Small Office
- Creative Workspace
- Desktop Setup
Who it’s for
- Home User
- Content Creator
- Photographer
- Videographer
- Small Business User
Things to consider
This is a desktop-style external drive, so it generally needs mains power and is less travel-friendly than smaller portable SSDs or bus-powered portable hard drives.
Portability rating
3/10 - desktop form factor and external power make it better for fixed use than carrying around
Backup suitability
9/10 - high capacity and simple operation make it well suited to routine home or office backups
Durability vs category average
Average for a desktop external hard drive; better suited to stationary use than frequent travel
Multi-device compatibility
8/10 - works well with common computer setups via USB, though formatting may vary by operating system
Ease of use score
9/10 - very straightforward for users who want simple extra storage and backup space
Key benefits
- 12tb capacity: Provides substantial room for backups, media libraries and large project files in one place.
- Plug-and-play setup: Makes it easy to add extra storage quickly without a complicated installation process.
- Desktop external design: Suits fixed workspaces where you want always-available extra storage beside a PC or laptop.
- Usb connectivity: Offers a straightforward connection for everyday file transfers and backups.
- Archive-friendly storage: Ideal for keeping older files, completed projects and large personal collections organised off your main computer.
- Single-drive simplicity: Keeps storage expansion easy for users who want capacity without NAS-style complexity.
- Large media library support: Handles extensive photo, music and video collections without filling your internal drive.
- Suitable for regular backups: Gives you enough space to maintain repeated system and personal file backups over time.
Q: Does the Seagate 12TB Expansion Desktop Hard Drive need its own power supply?
A: Yes. This is a desktop external hard drive, so it uses a separate power adaptor rather than running from USB alone. That suits fixed desk setups and large-capacity storage, but it is less convenient for portable use than a pocket-sized drive.
Q: Can this Seagate Expansion Desktop drive be used with both Windows and Mac?
A: Yes, it can be connected to both, but full read and write access depends on the file system on the drive. If you want to move files between Windows and Mac, or use Time Machine, reformatting may be needed and that erases existing data.
Q: Is USB 3.0 on this 12TB Seagate drive fast enough for large backups?
A: Yes. USB 3.0 is well suited to bulk backups, photo libraries and media storage, and it is much faster than USB 2.0 for large file transfers. As a hard drive, it still will not feel as quick as an external SSD for heavy editing or app loading.
Q: Why will a 12TB hard drive show less than 12TB on a computer?
A: Because drive makers rate capacity in decimal terabytes, while many computers report space in binary units. After formatting, a 12TB drive commonly appears as roughly 10.9TB usable, which is normal and not a sign of missing storage.
Q: Is the Seagate 12TB Expansion Desktop Hard Drive suitable for 24/7 NAS use?
A: No. This model is a direct-attached USB desktop drive for one computer at a time, not a dedicated NAS drive for continuous multi-user network access. If you need RAID, always-on operation or shared folders, a NAS-specific setup is the better fit.









