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Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400
Seagate 4TB Expansion Portable External Hard Drive STKM4000400

Seagate 4TB Expansion Portable External Hard Drive STKM4000400

$195.81

(11,743 reviews)

The Seagate Expansion 4TB External HDD is a high-capacity portable hard drive that provides plenty of space for storing and backing up your important files and documents. The hard drive measures 11.7cm x 8cm x 1.48cm and weighs only 170g, making it easy to carry with you wherever you go. The hard drive connects to your computer via USB 3.0 for fast data transfer speeds and is compatible with both Windows and Mac operating systems. The hard drive comes with 3 years of data recovery services, providing you with added peace of mind and protection for your valuable data. The hard drive features a durable and sleek black design that looks great and is built to withstand the rigors of daily use. The hard drive has a large storage capacity of 4TB, providing you with ample space for storing large files such as photos, videos, and music. The hard drive is powered via USB, eliminating the need for an external power source and making it a convenient and portable storage solution. The hard drive comes with Seagate's easy-to-use backup software, allowing you to schedule automatic backups of your important files and documents. The hard drive also features plug-and-play functionality, making it easy to set up and use right out of the box. The Seagate Expansion 4TB External HDD is a reliable and high-capacity storage solution that is perfect for anyone who needs to store and backup large amounts of data, with the added peace of mind of 3 years of data recovery services.

The Seagate Expansion 4TB External HDD is a high-capacity portable hard drive that provides plenty of space for storing and backing up your important files and documents. The hard drive measures 11.7cm x 8cm x 1.48cm and weighs only 170g, making it easy to carry with you wherever you go. The hard drive connects to your computer via USB 3.0 for fast data transfer speeds and is compatible with both Windows and Mac operating systems. The hard drive comes with 3 years of data recovery services, providing you with added peace of mind and protection for your valuable data. The hard drive features a durable and sleek black design that looks great and is built to withstand the rigors of daily use. The hard drive has a large storage capacity of 4TB, providing you with ample space for storing large files such as photos, videos, and music. The hard drive is powered via USB, eliminating the need for an external power source and making it a convenient and portable storage solution. The hard drive comes with Seagate's easy-to-use backup software, allowing you to schedule automatic backups of your important files and documents. The hard drive also features plug-and-play functionality, making it easy to set up and use right out of the box. The Seagate Expansion 4TB External HDD is a reliable and high-capacity storage solution that is perfect for anyone who needs to store and backup large amounts of data, with the added peace of mind of 3 years of data recovery services.

Seagate 4TB Expansion Portable External Hard Drive STKM4000400

(11,743 reviews)

The Seagate Expansion 4TB External HDD is a high-capacity portable hard drive that provides plenty of space for storing and backing up your important files and documents. The hard drive measures 11.7cm x 8cm x 1.48cm and weighs only 170g, making it easy to carry with you wherever you go. The hard drive connects to your computer via USB 3.0 for fast data transfer speeds and is compatible with both Windows and Mac operating systems. The hard drive comes with 3 years of data recovery services, providing you with added peace of mind and protection for your valuable data. The hard drive features a durable and sleek black design that looks great and is built to withstand the rigors of daily use. The hard drive has a large storage capacity of 4TB, providing you with ample space for storing large files such as photos, videos, and music. The hard drive is powered via USB, eliminating the need for an external power source and making it a convenient and portable storage solution. The hard drive comes with Seagate's easy-to-use backup software, allowing you to schedule automatic backups of your important files and documents. The hard drive also features plug-and-play functionality, making it easy to set up and use right out of the box. The Seagate Expansion 4TB External HDD is a reliable and high-capacity storage solution that is perfect for anyone who needs to store and backup large amounts of data, with the added peace of mind of 3 years of data recovery services.

The Seagate Expansion 4TB External HDD is a high-capacity portable hard drive that provides plenty of space for storing and backing up your important files and documents. The hard drive measures 11.7cm x 8cm x 1.48cm and weighs only 170g, making it easy to carry with you wherever you go. The hard drive connects to your computer via USB 3.0 for fast data transfer speeds and is compatible with both Windows and Mac operating systems. The hard drive comes with 3 years of data recovery services, providing you with added peace of mind and protection for your valuable data. The hard drive features a durable and sleek black design that looks great and is built to withstand the rigors of daily use. The hard drive has a large storage capacity of 4TB, providing you with ample space for storing large files such as photos, videos, and music. The hard drive is powered via USB, eliminating the need for an external power source and making it a convenient and portable storage solution. The hard drive comes with Seagate's easy-to-use backup software, allowing you to schedule automatic backups of your important files and documents. The hard drive also features plug-and-play functionality, making it easy to set up and use right out of the box. The Seagate Expansion 4TB External HDD is a reliable and high-capacity storage solution that is perfect for anyone who needs to store and backup large amounts of data, with the added peace of mind of 3 years of data recovery services.

$195.81 - $380.00

in 30 offers

The lowest price for Seagate 4TB Expansion Portable External Hard Drive STKM4000400 right now is $195.81 at 友和 Yoho, compared across 21 retailers.

The all-time low was $89.67 on 17 July 2025 — today's price is 118% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 9 June 2026.

Capacity:

2 TB
14 TB

Price comparison

Price data powered by pricesAPI.io

Last updated at 09/06/2026 01:22:20

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$219.00

Seagate 4TB Expansion Portable HDD

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

友和 Yoho

$195.81

Mastercard $100 OFF | Seagate Expansion 4TB USB3.0 Portable Hard Disk STKM4000400 Black

Delivery $18.13

System Technology Services

$200.00

Seagate 4TB Expansion Portable HDD

Delivery by Thu $15

microless.com

$205.95

Seagate 4TB Expansion Portable USB 3.0 External HDD, Micro-USB 3.0 Interface, Bus Powered, Rescue Data Recovery Services, Preformatted exFAT, Windows

Delivery between 12–19 June $47.59

Techinn.com

$216.99

Seagate Stkm4000400 Usb 3.0 4tb External Hdd Black

Delivery $29.99

Techinn.com

$280.99

Seagate Expansion 4tb External Hdd Black

Delivery $19.99

JB Hi-Fi

$219.00

Seagate Expansion Portable 4TB Hard Drive

Delivery $6.99

Joyce Mayne

$219.00

Seagate Expansion 4TB Portable Hard Drive - Black

Delivery $7.95

Playthek.com

$221.80

Seagate Expansion STKM4000400 external hard drive 4000 GB Black

Free delivery

Matt Blatt

$223.00

4TB Seagate Expansion Portable Drive

Delivery $17.99

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

19 December 2022

originally posted on pbtech.co.nz

OK - I like not having to put all my research findings on the cloud - and so having a handy 4 Terrabyte external hard drive is a very useful backup. And I don't have to worry about solar flares and satellites.I have purchased Seagate external hard drives previously and they have all worked fine. This 4 Terrabyte does what I expected it to do (i.e., back up files and give me some peace of mind) but I was very pleasantly surprised by just how fast it downloaded a total of over 40,000 files. Almost done within a matter of minutes.

16 March 2023RuthP12

originally posted on pbtech.co.nz

It has the ability to hold digital files and store them - for as long as you want. I loaded some files onto it, and was amazed that they were still there when I next opened it. It's very portable too - I can just pick it up and place it anywhere on my desk, no worries. I like the colour, it's sleek, it doesn't make a statement or ask any questions - no one will start a conversation about the colour of your hard drive, great for introverts. The texture soothes me when I'm having a real hard day at work, good for general panic attacks when my other inferior drive dies.Cons: it's not portable when plugged in - you have to unplug it to move around. Disappointed.

Excellent Addition to my home
19 July 2021

originally posted on seagate.com

The Seagate HDD Is a wonderful addition to my Xbox one's limited hardrive space. I was constantly having to delete games to add new ones and now I have plenty of space.Set up was a breeze and the device works perectly. I plugged it in and it worked right away , I was able to play games on the HDD without any lag or disconnection .This device is much smaller than i had expected which is great because it takes up barley any space on my console table . I really love this product !This was my first experience with the brand Seagate and I'm impressed. Just plug it in and you're ready to go

Specification

General
Device TypeHard drive - external (portable)
Capacity4 TB
InterfaceUSB 3.0
Width80 mm

Price comparison

Updated about 13 hours ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$219.00

Seagate 4TB Expansion Portable HDD

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

友和 Yoho

$195.81

Mastercard $100 OFF | Seagate Expansion 4TB USB3.0 Portable Hard Disk STKM4000400 Black

Delivery $18.13

System Technology Services

$200.00

Seagate 4TB Expansion Portable HDD

Delivery by Thu $15

microless.com

$205.95

Seagate 4TB Expansion Portable USB 3.0 External HDD, Micro-USB 3.0 Interface, Bus Powered, Rescue Data Recovery Services, Preformatted exFAT, Windows

Delivery between 12–19 June $47.59

Techinn.com

$216.99

Seagate Stkm4000400 Usb 3.0 4tb External Hdd Black

Delivery $29.99

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

19 December 2022

OK - I like not having to put all my research findings on the cloud - and so having a handy 4 Terrabyte external hard drive is a very useful backup. And I don't have to worry about solar flares and satellites.I have purchased Seagate external hard drives previously and they have all worked fine. This 4 Terrabyte does what I expected it to do (i.e., back up files and give me some peace of mind) but I was very pleasantly surprised by just how fast it downloaded a total of over 40,000 files. Almost done within a matter of minutes.

originally posted on pbtech.co.nz
16 March 2023

It has the ability to hold digital files and store them - for as long as you want. I loaded some files onto it, and was amazed that they were still there when I next opened it. It's very portable too - I can just pick it up and place it anywhere on my desk, no worries. I like the colour, it's sleek, it doesn't make a statement or ask any questions - no one will start a conversation about the colour of your hard drive, great for introverts. The texture soothes me when I'm having a real hard day at work, good for general panic attacks when my other inferior drive dies.Cons: it's not portable when plugged in - you have to unplug it to move around. Disappointed.

RuthP12 originally posted on pbtech.co.nz
Excellent Addition to my home
19 July 2021

The Seagate HDD Is a wonderful addition to my Xbox one's limited hardrive space. I was constantly having to delete games to add new ones and now I have plenty of space.Set up was a breeze and the device works perectly. I plugged it in and it worked right away , I was able to play games on the HDD without any lag or disconnection .This device is much smaller than i had expected which is great because it takes up barley any space on my console table . I really love this product !This was my first experience with the brand Seagate and I'm impressed. Just plug it in and you're ready to go

originally posted on seagate.com
Excellent external storage.
13 July 2022

We needed a large storage device to make a backup of a PC and all its drives. Having relied on SSD's performance wasn't critical for our purchase. However this drive performs well, we connected via the USB3 and the transfer rate was quite impressive having not purchased a HDD drive in over 5 years, the technology has still advanced. The drive filled up and with no noticeable degradation of performance, even when nearing capacity.

LeeWr originally posted on scan.co.uk
Great Drive!
22 September 2022

I needed a drive to transfer a lot of data that I won't be moving around often. That's why I went with this large drive as opposed to the cost of SSD. This drive is humming right along with the transfer! Simple plug and play, and already formatted for the best portable storage. Be sure to connect it to your fastest USB port for peak performance. USB 3 runs apx. 4x faster transferring data to this portable drive from my desktop as opposed to USB 2. There is no power cord, because it's not needed. It's just plug and play. Enjoy!

Minnesnowtah originally posted on bestbuy.com
Great device, huge storage at a great price
4 July 2022

Great device heaps of storage. Had an issue with my PC not booting with it plugged in but this was due to the format being exFAT by default. Easily fixed by formatting to NTFS or disabling USB boot from BIOS.Ignore the other reviews, no where is this advertised as a USB-C device so why would you give it a negative review.Obviously if you are running a USB 2.0 port it will be slow. And your TV is only compatible with FAT32 which is not the HDDs fault. That is the limitation of your TV and computer. Your hardware is not good enough for the HDD....

Shannon originally posted on noelleeming.co.nz
Huge Storage in a small package
20 July 2021

Really great little portable drive with a massive storage capacity. Does not require a power cord, does not have fans or anything like some portable "desktop" units have. Great for keeping in your briefcase to have your backup handy at all times. As an architect, having some of the larger files that arent backed up on a cloud somewhere (building models, etc.) close at hand at all times is extremely useful. USB 3 also transfers/backs up fairly quickly as well, so that makes it convenient.

ArchitectGuy originally posted on seagate.com
I brought this for xbox 1 external storage, not going to lie I was concerned that it wouldn't be ...
30 January 2022

I brought this for xbox 1 external storage, not going to lie I was concerned that it wouldn't be compatible, but it is. Dead simple to format to the xbox even I could do it without any instructions or referral to Google! Only issues I have incurred is with my actual box needing a cold reset because Noxi (console nickname) was being obnoxious and not loading up my game library. I have even added on backwards compatible games too with absolutely zero issues. I am yet to see if I can transfer my games from Noxi onto the Seagate, which can be personally named upto 30 something characters. It is very hard to fill I've so far used 15.9% of 4TB which is (if I remember correctly) 14 games, this is with 9% being pre used. I would definitely recommend buying this over ... MoreI brought this for xbox 1 external storage, not going to lie I was concerned that it wouldn't be compatible, but it is. Dead simple to format to the xbox even I could do it without any instructions or referral to Google! Only issues I have incurred is with my actual box needing a cold reset because Noxi (console nickname) was being obnoxious and not loading up my game library. I have even added on backwards compatible games too with absolutely zero issues. I am yet to see if I can transfer my games from Noxi onto the Seagate, which can be personally named upto 30 something characters. It is very hard to fill I've so far used 15.9% of 4TB which is (if I remember correctly) 14 games, this is with 9% being pre used. I would definitely recommend buying this over official xbox Seagates as they appear to do exactly the same thing, only you'll pay through the nostrils for a coloured xbox one.

e.e.E. originally posted on homeessentialsdirect.com
Reliable and Easy
30 July 2021

I take a lot of photos and videos and because of this I need something that I can rely on to store all of my memories and important documents. The Seagate portable expansion works perfectly and I can rest assured that my documents are safe.This expansion is easy to set up and use and has plenty of storage space. I highly recommend this for anyone who needs more storage and backups for their memories and documents. This expansion has really helped me feel more confident and comfortable with my photos, video and other documents.

JenP1982 originally posted on seagate.com
stephen's review of Seagate Retail EXPANSION 14TB DESKTOP
1 April 2023

Pros: Good capacityCons: Loud high frequency whine when running. Really deafening so you need earplugs to avoid hearing damage. Without earplugs, ears ring for a couple of days afterwards. Can't keep it on, of course.

stephen originally posted on box.co.uk

Specification

General
Device TypeHard drive - external (portable)
Capacity4 TB
InterfaceUSB 3.0
Width80 mm

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