Seagate Expansion 18TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP18000402)
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
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.
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Availability:
14 left in stock
Arrives
Wednesday, Dec 24
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Style: Desktop HDD
Capacity: 18TB
Features
- Easy-to-use desktop hard drivesimply plug in the power adapter and USB cable.Specific uses: Business, personal.Special feature : Compact. Hard disk description : Mechanical Hard Disk.
- Fast file transfers with USB 3.1
- 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
- The available storage capacity may vary.
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: 18 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: Desktop
Compatible Devices: Desktop
Installation Type: External Hard Drive
Color: Black
Hard Drive: 18 TB Desktop
Brand: Seagate
Series: Expansion Desktop Drive
Item model number: STKP18000402
Hardware Platform: Mac
Item Weight: 3.03 pounds
Product Dimensions: 8.58 x 8.35 x 3.03 inches
Item Dimensions LxWxH: 8.58 x 8.35 x 3.03 inches
Color: Black
Flash Memory Size: 18 TB
Hard Drive Interface: USB 3.0
Hard Drive Rotational Speed: 5400 RPM
Manufacturer: Seagate
Language: English, English, English
Date First Available: August 28, 2021
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Dec 24
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
Style: Desktop HDD
Capacity: 18TB
The item itself does not get hot,it is very easy to use,The size is about whats pictured,and it can hold up to at least 16 THOUSAND GIGABYTES of ANYTHING
Reviewed in the United States on November 13, 2025 by Martin rivet
Style: Desktop HDD
Capacity: 14TB
Excelente adquisición, cumple en calidad y velocidad de transferencias
Reviewed in the United States on November 19, 2025 by Andres Felipe Gil Alvarez
Style: Desktop HDD
Capacity: 8TB
Still working, after 2.5 years of continuous use.
Reviewed in the United States on October 29, 2025 by Tim Green
Style: Desktop HDD
Capacity: 8TB
Seagate Desktop Drive 8TB External Hard Drive Review The Seagate 8TB Desktop Drive is a simple, high-capacity workhorse built for large backups and general storage. It’s a **mechanical USB 3.0 drive (3.5-inch form factor)** that plugs into both Windows and Mac (reformat required for Time Machine). Setup is straightforward—plug in the power adapter and USB cable, and it’s ready to drag and drop files immediately. Performance is **typical for an HDD**—write speeds around 150–180 MB/s, which is fine for storing large video collections, backups, and read-heavy tasks. It’s not ideal for constant rewriting or editing 4K footage directly off the drive; that’s where SSDs still win. For archive and bulk storage, though, it offers an unbeatable **cost-per-terabyte value**. Build quality is basic but functional, with a plastic case that stays cool and a low hum that’s noticeable but not distracting. It includes an **18W power adapter**, so it’s meant to stay on a desk rather than travel. Reliability feedback varies—some units last for years, while others show bad sectors after heavy use. As with all HDDs, pairing it with cloud or secondary backups is smart. Bottom line: A dependable, plug-and-play desktop drive for massive local storage at a great price per terabyte. Perfect for media libraries, backups, and game storage, but not for heavy editing or mobile use.
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Reviewed in the United States on October 8, 2025 by Rich Reviews
Style: Desktop HDD
Capacity: 10TB
I bought this drive (10TB version) to use as a media storage device for my Plex server. I run my Plex server on an older (2013) apple iMac that is running MacOS Catalina. When I first unboxed the drive, it looked nice, but when I plugged it into the power and then the USB on the back of my computer, it wouldn't show up. I couldn't get it to show up in my Finder window, on my desktop, or even in Disk Utility. I did all the tricks to show all drives and all volumes, but it just didn't even recognize that it was plugged in at all. I read some of the other reviews, lots of people complaining about how it wouldn't work on their mac etc..., I thought that maybe I was going to have to return the drive and figure out something else (it comes preformatted in exFAT, but as I said, MacOS Catalina wouldn't even acknowledge it was plugged in at all, so there was no way for me to reformat into the the system I wanted). Luckily I had a Mac Laptop with BigSur installed. On my laptop, it didn't show up in Finder or the desktop at first, but it did recognize it in Disk Utility (again, you have to set it to show all drives and volumes in the view). There I was able to select it, then reformat it as MacOS Journaled (or whatever file system you wanted, but that is what I use on my older Mac). Once I did that, I was able to plug it into my older Mac, and it showed up in Finder, Desktop, and Disk Utility. I actually reformatted again on the old mac (just to be safe, but probably not really needed as it was reading, I just wanted to make sure it would work on the old mac the way I wanted it to). As I'm typing this, it's just finishing backing up the 4TB of media from my old drive, it's been whirring away for about 24 hours now, no problems so far. So as long as you are willing (and have the newer macOS available), then this is a great external hard drive for Macs, just don't expect it to work natively right out of the box (but external hard drives rarely do). That being said, I am happy with the price and performance so far, hoping 10TB will last me quite a while (my old drive was 6TB and I thought I would never even come close to filling that up, but I don't like to run my drives too full, so using 4TB out of 6TB was more than I liked, so this 10TB should fit the bill nicely for a while anyway).
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Reviewed in the United States on November 19, 2022 by M. Stevenson
Style: Desktop HDD
Capacity: 14TB
For the record, Seagate products have for decades been a reliable go-to brand for me. I'm used to their products just working for years, well past the warranty period. My dilemma in this particular case: I obtained this drive the other day to back up my failing NAS. When copying from it to my new NAS, ran into some problems; copy process would hang on read. Ended up having to partially copy directly from the old NAS to the new NAS, somewhat slower over the network. Once that was completed, ran a basic chkdsk on the new drive, which took hours to run, with the result being "disk does not have enough space to replace bad clusters...corruption was found while examining files..." I can't send the drive back for a refund/replacement because I have 4TB of data on it that I can't safely destroy without tearing open the sealed case, which would void the warranty. And Amazon customer service is down due to the ongoing outage of their systems - calls go unanswered. So I've spent $260 on a drive I didn't even get to fully use once and technically have no viable recourse. So this review is for this particular item, which I'm hoping is just a one-off experience.
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Reviewed in the United States on October 20, 2025 by Petar Zivovic Petar Zivovic