Seagate Expansion 20TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP20000400)
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Availability:
Only 3 left in stock, order soon!
Arrives
Friday, Feb 20
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Capacity: 20TB
Style: Expansion Desktop HDD
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
Voltage: 28 Volts
Batteries: 1 AAAA batteries required.
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:
Friday, Feb 20
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Capacity: 22TB
Style: Expansion Desktop HDD
I have several smaller hard drives I use to store photos and old files but they are getting old and it is hard to organize files, especially photos across several drives so I was in the market for a large hard drive to better organize my old files. I opted for the Seagate 22TB drive because of its' size and, for the size of the drive, it was relatively inexpensive compared to other options. Things I like about the drive: 1) It has a large capacity but is relatively small compared to my other external drives; 2) it is plug and play. I have some drives my system has a hard time identifying sometimes but there are no issues with this drive; 3) everything works out of the box. I have had no issues so far; 4) I use it on 3 systems and it works well on all 3 systems and is easy to move from one to the other. It is not my fastest drive. have a portable Sandisk SSD that is faster but it has not been a problem. You can hear it working but it is not annoying. Overall I am very pleased with the Seagate Drive.
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Reviewed in the United States on January 2, 2026 by DAC
Capacity: 22TB
Style: Expansion Desktop HDD
I recently picked up a 22TB external hard drive, and so far it’s been a great value for amount of storage you get. The capacity is huge for the price, which makes it appealing option if you need a lot of space without spending a fortune. Physically, it’s a typical external drive—nothing oversized or bulky—so it fits easily on a desk or shelf. One thing to note, though: it can get a bit loud at times. I wouldn’t recommend keeping it running full‑time in a quiet space like a bedroom office unless you don’t mind some background noise. My main use is offsite backups, so I only plug it in for short periods. Because of that, it’s too early to say much about long‑term reliability. Performance‑wise, it’s not the fastest drive out there, but it’s perfectly adequate for backup tasks and general storage. Overall, if you need a ton of space at a reasonable price and don’t mind occasional noise, it’s a strong choice.
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Reviewed in the United States on December 24, 2025 by Brad H
Capacity: 24TB
Style: Expansion Desktop HDD
Great, for local storage either networked or not. Recommend replacing their garbage usb cable that comes with it (cable matters makes a good one). Pretty silent under low operation, speed is usb. Lifespan with seagate is hit or miss. I’ve had drives from them last a couple days and I’ve had drives last nearly a decade so hardware gambling. Wouldn’t recommend anything sensitive going on it, if it dies it’s gone. I use mine paired with a local caching machine for windows and steam updates. (Games too) it runs on the network via that “server” and as I learned when dealing with mechanical drives, don’t put stuff on it you can’t afford to lose. Was getting 460ish MB/s average read and 390ish MB/s write with your peaks and dips associated with HDD madness.
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Reviewed in the United States on January 16, 2026 by Mitsu-aki
Capacity: 4TB
Style: Portable HDD
I purchased one of these several years ago, and was pleasantly surprised to find that they sent me a case of 8 brand new SSDs, kept a few, sold a couple at about a 60% discount from the online price, gave a couple away as gifts, and their lifespan has been impressive, they've all performed beautifully the whole time I've had them. Instant access to files with no complex processes to follow, although the stock cable could be longer.
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Reviewed in the United States on January 26, 2026 by Christian Mcatee
Capacity: 20TB
Style: Expansion Desktop HDD
The external hard drive enclosure is slightly bigger than the actual hard drive itself. In my experience it has an okay speed. Not the fastest drive that I've used. The USB port is a normal usb-a 3.0 port so no usb-c. The power source has multiple adapters for people who would use it for their travels so no matter what kind of power outlet it present you should be okay. The design of the external case has openings to vent the heat coming from the actual hard drive inside. In terms of security, the drive is held in my rubber pads within the external enclosure that are surrounded by plastic tabs that hold it in. The external hard drive is a good choice to use for a NAS build if you are comfortable shucking the external case. The price is competitive when compared to a normal NAS internal drive. If you choose to go that route bear in mind that shucking the drive comes at the risk of voiding the warranty. Overall it's decent and has been running well on my NAS. The okay speed on the drive is the limiting factor which is why it's 4 out of 5 stars. Lastly the actual enclosure itself will still run other old drives if the ribbon cable and board aren't damaged during the shucking process. Any old 3.5 internal drives would work perfectly to recycle and not throw out the remaining hardware.
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Reviewed in the United States on November 10, 2025 by Chris
Capacity: 5TB
Style: Portable HDD
If Seagate honors the warranty, I'll amend this review. I purchased two of these to store my video library on. After spending close to two months downloading, one of the drives just stopped working. I turned my desktop off at night and the next day I fired the computer back up, and one of hard drives was not recognized nor did the power light come on. After frantically trying to find a solution, I finally had to admit that I may have just wasted a couple of months and over 800 movies, and the cost of the hard drive. I'm going to reach out to Seagate in the morning, and see what they are going to do. I am amending my review. Seagate was able to restore all the data from my crashed hard drive. I was very impressed with their customer support, and the quick turnover time in recovering my data. As a bonus, they gave me a free hard drive that they restore the data to, plus they sent me another hard drive to replace the one that stopped working.
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Reviewed in the United States on January 12, 2026 by jmckee
Capacity: 2TB
Style: Portable HDD
worked great out of box... Small issue of going from win10 to win11 tho. Win10 was drag /drop, no problems. When linked on win11, file folders were not found. Solved issue: create the folders on Win11 first, then drag /drop from win10 to those folders....all good Speed good for it's type, 2TB is plenty BU for me.
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Reviewed in the United States on January 11, 2026 by Tom Mac
Capacity: 5TB
Style: Portable HDD
This Seagate 5TB portable drive is exactly what I needed for backups and extra storage. Setup was plug-and-play on both PC and Mac, and it works seamlessly with my PS4 and Xbox as well. Transfer speeds over USB 3.0 are fast for large files, and the drive is quiet and doesn’t get hot during use. The included 1-year Rescue Service is a nice bonus for peace of mind. Great value for 5TB of portable storage.
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Reviewed in the United States on January 20, 2026 by Mason W