







💼 Elevate your digital game with storage that works as hard as you do.
The Seagate Expansion 4TB External HDD combines massive storage capacity with USB 3.0 speed and cross-platform compatibility, wrapped in a sleek, portable design. It includes a 3-year Rescue Data Recovery service, ensuring your valuable data stays protected. Ideal for professionals needing reliable, high-capacity external storage for both Windows and Mac systems.










| ASIN | B08ZJFH7Y1 |
| Best Sellers Rank | #28 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #1 in External Hard Disks |
| Box Contents | Seagate® Expansion portable hard drive, 18-inch (45.72cm) USB 3.0 cable, Quick start guide, Limited Warranty: APAC - 3 years, Rescue Data Recovery Services |
| Brand | Seagate |
| Brand Name | Seagate |
| Cache Memory Installed Size | 4 |
| Color | Black |
| Compatible Devices | Desktop, Laptop |
| Connectivity Technology | USB |
| Country of Origin | Thailand |
| Customer Reviews | 4.4 out of 5 stars 32,268 Reviews |
| Data Transfer Rate | 600 Megabytes Per Second |
| Digital Storage Capacity | 4000 GB |
| Enclosure Material | plastic |
| Form Factor | 2.5-inch |
| Global Trade Identification Number | 00763649160480, 03660619040254, 10763649160487 |
| Hard Disk Form Factor | 2.5 Inches |
| Hard Disk Interface | USB 2.0/3.0 |
| Hard Disk Rotational Speed | 5400 RPM |
| Hard Disk Type | Mechanical Hard Disk |
| Hard-Drive Size | 4 TB |
| Hardware Connectivity | USB 3.0 |
| Importer Contact Information | SUPERTRON INDIA PVT LTD, SUPERTON HOUSE 2., COOPER LANE,OFF R N MUKHERJEE ROAD, KOLKATA |
| Installation Type | External Hard Drive |
| Item Dimensions L x W x Thickness | 11.7L x 8W x 1.5Th Centimeters |
| Item Type Name | Portable Hard Drive |
| Item Weight | 181 g |
| Manufacturer | Seagate, Seagate Technology (Thailand) Limited. India Customer Care No: 18003092525 |
| Manufacturer Contact Information | Seagate |
| Media Speed | 120 |
| Model Name | STKM4000400 |
| Model Number | STKM4000400 |
| Network Connectivity Technology | USB |
| Number of Items | 1 |
| Packer Contact Information | Seagate Technology (Thailand) Limited, 90 Moo 15 Tambol Sungnoen, Amphur Sungnoen, Nakhonratchasima 30170, Thailand |
| Product Features | Automatic Recognition, Drag and Drop, Portable, Sleek |
| Read Speed | 120 Megabytes Per Second |
| Special Feature | Automatic Recognition, Drag and Drop, Portable, Sleek |
| Specific Uses For Product | Personal |
| UPC | 763649160480 |
| Unit Count | 4 Count |
| Warranty Description | 3 years limited warranty |
R**N
Ver very nice product
Very nice looks fast data backup and nice compact size and Velur for money product
G**P
Decent Storage with Good Warranty, But Pricey and Slow
I recently purchased this 1TB hard disk which is light weight. My main reservation is the high cost; I feel the price should be lower for what it offers. As I anticipated, the transfer speeds are quite slow, so it's not ideal for frequent, large transfers. On the positive side, it comes with a generous warranty period, which provides some peace of mind. Crucially, I believe it's safe to store important files on it, which is the primary purpose of a hard drive. Overall, I'd say it's an okay product for bulk storage, provided you're aware of the slower speeds and higher price point.
S**L
Not working defective product
Not working product defective
N**A
Excellent
Really good product. Long lasting too.
A**N
Well made, easy to use
Good quality, works well. registration for warranty took 2 mins.
M**A
Good as expected, but be careful of a few things
Got this one for 12.5k (it might go lower, so wait for sales) for the 5TB one. The package came in not so good cushioning. Be sure to check for nearby Seagate service centres, because if you get a damaged drive, you would have to go to an authorised service centre for replacement. You'll get 4.54TiB of storage because Windows tends to show capacities in Tebibytes(TiB) not Terabytes(TB). So 5TB=4.54TiB. The speeds are fine (check CrystalDiskMark screenshot). The drive does get hot pretty quickly but it hasn't crossed 45C even under full load. Results might vary in summer though. Also, don't panic if your Seek Error and Read Error rates are increasing continuously in SMART values. It doesn't necessarily mean there are errors. Search for a Seagate error calculator online and put the raw values in there. That'll tell you if there are errors or not. As for the physical build quality, it's average. There is some flex in the middle of the drive and the plastic it's made of doesn't seem much better either. There's a small LED light that blinks if the drive is in use. I wish it had more features. The light in my 6 year old Toshiba drive would change colour if the drive is connected in USB2 mode.
A**R
Works As Expected
Performs as expected form a hard disk, [Test Results and hardkdisk photos in Images] Physical: It's light weight and small size (smaller than palm) The case is of okayish quality, if you press on it, it gets flexed maybe they should have made it a bit stronger the cable quality is good It comes in a single box with HDD and cable no additional case/cover included Storage Capacity: 931GB (10,00,17,05,86,112 bytes as reported by File Explorer Windows) which is exptected from a 1TB drive Since many people were complaining its not 1000 GB or 1024GB, windows will show different capacity then what a manufacturer advertise, you can look up on google on how that works In short the 931GB is what you'll get from a 1TB drive(any drive not just this one) Performance: As expected in a HDD Speed is as expected for a HDD Crystal Disk Mark test The first speed test i ran the write speed was slow but reconnecting it again it was good Speed tests are in images, for comparision i included benchmark of my internal drive as well {E drive: Seagate , D drive : My internal drive} both of 1TB When the drive is busy writing reponse time jumps upto 15 seconds They are both similar in terms of speed so no complaints there Test 1 copying ~3.5gb files of different sizes from 100KB to 200MB Took around 2 minute, avg speed of 25MB/s (write), there was some fluctuations when transfering smaller files Test 2 copying ~200GB folder with .mp4 files (all files over 500MB) Avg speed 100MB/s (write), the speed stayed pretty much the same Note: Sometimes it gives only 26MB/s write speed and other times over 100MB/s write speeds and i cant figure out why it does that, all my ports in the laptop are USB 3.1 gen1 so idk why the speed difference is there maybe some connection issue Connector : Its a USB A to USB micro B superspeed connector, the cable length is ~40cm which is okay and cable and pin quality is good Temperature : after a few tests the case became warm to touch or 45C as reported by software Its idle temperature is around 38C~39C at room temperature When plugged in computer there is a slight vibration if you hold it(which is fine), but no significant noise when reading or writing This is a short term test, i will update the review if anything happends regarding the drive As of now the the purchse for me was worth it, i bought it for INR 4899 during great indian festival sale
N**R
Scam on Amazon by Seller
Recently, I ordered a 2TB Seagate HDD on Amazon, and it was delivered the same day. However, the real issue started after I received it. The HDD arrived in brand-new packaging and appeared to be in perfect condition, but when I connected it to my laptop, it was not getting recognized. I tried all possible troubleshooting methods available online, but nothing worked. Amazon Customer Support Experience When I contacted Amazon customer care, I was shocked to learn that they wouldn't offer a return or even a replacement. Instead, they asked me to take the HDD to a Seagate service center, saying it was no longer their responsibility and had to be handled directly by the manufacturer. # Service Center Hassle Upon searching for Seagate service centers in Karnataka, I found that there was only one service center—located at SP Road, Bangalore. When I visited the center, the experience was terrible: - The support staff had a rude attitude and barely communicated properly. - They asked me to register a complaint on a third-party website instead of addressing the issue directly. - After raising the complaint, they didn't even check the device; they simply collected it and told me I would receive a replacement after a week. When I asked what if the replacement also didn’t work, they confidently assured me that it would. However, when they handed me an acknowledgment slip, I noticed something suspicious—it stated that since I was returning a new device, the replacement would be a refurbished unit, and I had to sign it. With no other option, I signed the document and left. # Refurbished HDD Instead of a New One After a week, I received the replacement—which I assume was a refurbished unit. Fortunately, it worked fine, but the entire process felt like a scam. What I Learned from This Experience 1. Possible Seller Scam – It seems like some sellers might be deliberately shipping defective units, knowing that many customers won't go through the hassle of visiting a service center. 2. Amazon Doesn’t Help – Even for defective items, Amazon refuses to offer returns or replacements, forcing customers to deal directly with the manufacturer. 3. Service Center Issues – Seagate has only one service center in all of Karnataka, and their support process is inconvenient and frustrating. 4. Refurbished Instead of New – Even after paying ₹7,000 for a new HDD, I was forced to accept a refurbished replacement. This experience raises serious concerns about the authenticity of products sold on Amazon and the lack of customer protection in such cases.
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