Search  for anything...
Seagate

Seagate Expansion Desktop 20TB, Externe Harde Schijf, 3.5", PC & Laptop, USB 3.0, Data Rescue Service (STKP20000400)

  • Based on 263,594 reviews
Condition: New
Checking for the best price...
$245.00 Why this price?
Save $164.99 was $409.99

Buy Now, Pay Later

As low as $40.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 1 left in stock, order soon!
Fulfilled by MobileMonster
Arrives Oct 15 – Oct 19
Order within 16 hours and 18 minutes
Available payment plans shown during checkout

Recently Viewed

Style: Expansion Desktop HDD


Capacity: 20TB


Color: DESKTOP


Features

  • Easy-to-use desktop hard drivesimply plug in the power adapter and USB cable
  • USB 3.0 allows fast file transfers for efficient data management
  • 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

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.

Digital Storage Capacity: 20 TB


Hard Disk Interface: USB 3.0


Connectivity Technology: USB


Brand: Seagate


Special Feature: Data Recovery Service


Hard Disk Form Factor: 3.5 Inches


Hard Disk Description: Mechanical Hard Disk


Compatible Devices: Desktop


Installation Type: External Hard Drive


Color: DESKTOP


Hard Drive: ‎20 TB Mechanical Hard Disk


Brand: ‎Seagate


Series: ‎Expansion Desktop


Item model number: ‎STKP20000400


Hardware Platform: ‎Linux, Mac, PC


Item Weight: ‎2.59 pounds


Product Dimensions: ‎6.93 x 1.44 x 4.75 inches


Item Dimensions LxWxH: ‎6.93 x 1.44 x 4.75 inches


Color: ‎DESKTOP


Flash Memory Size: ‎20 TB


Hard Drive Interface: ‎USB 3.0


Hard Drive Rotational Speed: ‎7200 RPM


Manufacturer: ‎Seagate


Language: ‎English, English, English


Date First Available: ‎January 31, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 15 – Oct 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Quality, Great Price, Great backup
Style: Portable HDD Capacity: 2TB Color: PORTABLE
Amazing how light these Hard Drives are now. Seems to work great. The Windows registration software on the drive works nicely, and takes you to the product support page where Seagate has good software to download for doing an image backup of your system or for checking the drive. Simple, one cable, no power cord needed, works great. Not a speed champion, but quite fine for storage and backup. ... show more
Reviewed in the United States on August 31, 2025 by Jonathan Bach
    • great value for price
Style: Expansion Desktop HDD Capacity: 28TB Color: DESKTOP
Got the 28tb version , works as expected for an external HDD, handling large transfers with ease, and breezing through smaller file transfers without a hitch. The enclosure is sleek and compact, feels like is of good quality Setup was quick and easy, everything came in the box The drive can get a bit noisy when it starts up but that's not much of a problem Its a really great value for the price ... show more
Reviewed in the United States on August 31, 2025 by d
    • Reliable with lots of storage
Style: Portable HDD Capacity: 2TB Color: PORTABLE
Perfect backup for my computer. Works perfectly right out of the box. Just plug in and go. Fast transfer speeds, compact, and plenty of space for backups. Great value for price.
Reviewed in the United States on August 26, 2025 by jmc
    • Favorite external hard drive
Style: Portable HDD Capacity: 2TB Color: PORTABLE
It’s fast, stores a lot, great size, with no noise whatsoever. This has become my favorite brand for external hard drives! Slick and compact makes it easy to transport for my laptop storage. I never have to wait for my files to load to long. Never going to a different external hard drive.
Reviewed in the United States on August 12, 2025 by Bruja Child
    • Good big drive, good price, lasting over a year now
Style: Expansion Desktop HDD Capacity: 8TB Color: DESKTOP
It was an excellent price, that's why I broke down and bought one, but I think it may be so big it bogs down my computer, folders sometimes stall opening or saving files. Also risky keeping files on such a big drive unless you have it backed up with another drive: if it bricks completely you'll lose 8TB of files. But still working well over a year later and does what I need it to, I have 2 mirrored, as with all my drives, I certainly suggest everyone do that with any files they care about. I also install all programs on the drive instead of on my C drive and had 2 computers fail over last few years but just plug into the drive and most programs work immediately if you keep the Documents folder on the drive. ... show more
Reviewed in the United States on July 1, 2025 by docweasel
    • Plenty of Storage in a Simple, Portable Package
Style: Portable HDD Capacity: 4TB Color: PORTABLE
Plenty of Storage in a Simple, Portable Package I’ve been using the Seagate Portable 4TB drive for a while now, and it has quickly become one of my most reliable tools for storage. What struck me first was how little effort it takes to get started. Out of the box, it was literally plug-and-play—no drivers, no setup hassles. Just connect it to my laptop and it was instantly recognized. The 4TB capacity is perfect for what I need—backups of my work files, a growing photo/video library, and a good chunk of media for travel. It’s a compact little drive that fits easily in a bag or even a jacket pocket, and because it doesn’t need external power, I can carry it around and use it anywhere without worrying about an outlet. Transfer speeds over USB 3.0 are solid for an HDD. I wouldn’t use it for constant video editing or heavy real-time tasks, but for moving large folders, streaming media, or doing weekly backups, it’s been smooth and dependable. It runs quietly and doesn’t heat up noticeably, even during long transfers. One thing to keep in mind: like all mechanical hard drives, it’s not built for drops or rough handling. I keep mine in a padded pouch when traveling just to be safe. Bottom line: If you want a straightforward, reliable, and high-capacity external hard drive at a fair price, this 4TB Seagate is hard to beat. It’s simple, portable, and does its job exactly as promised. ... show more
Reviewed in the United States on August 24, 2025 by Rich Reviews
    • Phenomenal drive for media storage
Style: Expansion Desktop HDD Capacity: 16TB Color: DESKTOP
I purchased this expansion drive almost 2 years ago now (11/2023), and have been using it daily ever since that time. It's been great for reliability, quality, and is way more space than I could ever need. I backup a lot of my purchased courses that are in both video and audio format, and this drive has been very good for that purpose. I do not use it for backup purposes, so I can't speak to it in that regard. For saving media, it's phenomenal. One thing that slightly concerned me when I first got it was that it was noisier than my 4 TB model was; I thought at first it was a problem with the drive. However, the noise has been consistent for the whole time I've used it, and it has never been a problem at all. The noise I'm referring to sounds like the drive is searching or scanning for something - only really occurs when I write large amounts of data to it or when it first mounts or starts up. ... show more
Reviewed in the United States on August 31, 2025 by N8
    • Fast and Reliable External Hard Drive with Huge Storage Capacity
Style: Expansion Desktop HDD Capacity: 8TB Color: DESKTOP
Review Image by Susan Susan
Review Image by Susan Susan
Review Image by Susan Susan
The media could not be loaded. This Seagate 8TB drive has been an excellent storage solution for me. It was ready to use right out of the box with simple plug-and-play setup. The transfer speeds over USB 3.0 are quick and stable which makes moving large files easy. The storage space is massive. I can keep all of my work files, photos, and videos in one place without worrying about running out. It runs quietly and stays cool even when I use it for hours at a time. In all, this is a dependable and efficient hard drive that gives me peace of mind for both backup and everyday use. ... show more
Reviewed in the United States on September 3, 2025 by Susan Susan

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...