Search  for anything...

UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0

Based on 2,593 reviews
Condition: New
Checking for the best price...
$86.17
Save $63.82 was $149.99

Buy Now, Pay Later


As low as $14.36 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – 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, Zip, Apple Pay, and Google Pay. 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 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Nov 4
Order within 13 hours and 52 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Capacity
1TB
Color
Black
Model
HDD2510
Storage
1 TB
Hard Disk Interface
USB 3.0
Special Feature
Portable
Warranty
2 Year Manufacturer
Works with
Desktop, Gaming Console, Laptop, Television

Features 5

  • Upgraded version - The mirror logo strip is combined with the striped non-slip design. The rounded corners of the shell are more suitable for holding. The strips play a heat dissipation function to ensure a stable and fast transmission process.
  • Ultra-thin and quiet - The motherboard adopts JMicron 578 noise-free solution, giving you a quiet working environment. Lightweight and portable size designed to fit in your pocket for easy portability.
  • Ultra-Fast Data Transfers - Pairing this external hard drive with JMicron 578 solution USB 3.0 and USB 2.0 interfaces enables blazing-fast data transfer. It boasts theoretical read speeds of up to 125MB/s and write speeds of up to 103MB/s.
  • Plug and Play - With no software to install, just plug it in and the drive is ready to use.The hard disk chip is wrapped with an aluminum anti-interference layer to increase heat dissipation and protect data.

Description

We have been innovating, just to give more to buyers UnionSine distinguished a importantly and safe design in craftsmanship, and through innovative assembly of accessories that enjoy reputation all over the world, it will bring you a perfect experience of using feel and transmission speed.Choose us to give you the best after-sales service. I believe you will be satisfied with UnionSine UnionSine is a storage brand that integrates modern design, extreme details, international standards and stylish luxury texture. 4 trendy colors, there is always one that suits you UnionSine's enclosure is designed with cool brushed stripe design and rounded radians, with a comfortable feel.Easy to carry, the slim body weighs only 0.32 lb, giving you the ultimate enjoyment compatible system: Windows / Mac / Linux / Android,Compatible Equipment:PC/Laptop/PS4/Xbox/TV. For PS4, Xbox, please purchase products with a capacity of 250GB or more,PS4 cannot connect to wifi after recognizing the external hard drive.If it is not compatible, please upgrade the PS4 firmware. USB 3.0 ultra-high-speed USB connection, can transfer data at 10Gbit/s speed, which is about 10 times faster than the standard USB 2.0 Read speed up to 140M/s,Write speed up to 120M/s Hard disk manufacturers and operating systems use different alphabets to calculate storage capacity, resulting in a lower displayed capacity. The actual capacities are as follows 250GB≈232GB,320GB≈298GB,500GB≈465GB,750GB≈698GB,1TB≈931GB,2TB≈1.8TB, 4TB≈3.6TB Windows doesn’t show up in the file manager, you should Open Disk Management on Windows 8 or 10, right-click the start button and select “Disk Management”.On Windows 7, press Windows+R to open the Run dialog, type diskmgmt.msc into it, and press Enter It is recommended to use USB3.0 interface to use the product, USB2.0 interface may be insufficient power supply, long-term use of USB2.0 power supply, may lead to commodity data reading problems, and affect the service life of the product.

Specs 26

Digital Storage Capacity 1 TB
Hard Disk Interface USB 3.0
Connectivity Technology USB
Brand UnionSine
Special Feature Portable
Hard Disk Form Factor 2.5 inches
Hard Disk Description Mechanical Hard Disk
Installation Type External Hard Drive

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 4

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Great external drive for anyone who needs additional portable storage
Capacity: 500GB Color: Pink
I’m really impressed with this UnionSine 500GB portable external hard drive. It’s compact, lightweight, and slim enough to easily carry in a bag without taking up much space. Setup was simple, and it worked well for storing and transferring files. I especially like having the extra storage available for photos, videos, documents, and other important files without relying entirely on my computer’s internal storage. The design feels convenient for everyday use, and the price makes it a practical storage solution. Overall, a great little external drive for anyone who needs additional portable storage. ... show more
Reviewed in the United States on August 31, 2026 by Kylene

Great Value and Easy to Use!
Capacity: 1TB Color: Black
I purchased the UnionSine 1TB portable hard drive to back up photos, videos, and work files, and it has exceeded my expectations. The drive is incredibly slim, lightweight, and easy to carry in my laptop bag. Setup was truly plug-and-play—my computer recognized it immediately without any additional software. Transfer speeds are fast enough for everyday backups, and the 1TB capacity provides plenty of storage for documents, media, and personal files. I also appreciate the sleek design and quiet operation. For the price, this is an excellent external hard drive that delivers reliable performance and great portability. I would definitely recommend it to anyone looking for an affordable and convenient storage solution. ... show more
Reviewed in the United States on June 19, 2026 by Jenny

It's fast, nice and quiet and just plug and play, no extra software needed
Capacity: 5TB Color: Black
I Bought the 5TB HDD version and It’s a great little portable HDD for extra storage for anyone who needs it. I personally use it to back up my Family Photos, Music, Videos, and Movies. I’ve had no issues with it at all—it’s fast, nice and quiet, and it does exactly what it’s supposed to do. Best of all, it’s super easy to use, just plug and play, no extra software needed, and you can start using it as soon as you take it out of the box. ☺️ ... show more
Reviewed in the United States on September 28, 2026 by @VMSB94

Absolute Deal!!! 🔥🔥🔥🔥
Capacity: 500GB Color: Black
I wasn’t expecting much for the price, but this hard drive completely exceeded my expectations. It was literally plug-and-play—my computer recognized it instantly, and transferring my files was quick and hassle-free. It’s surprisingly slim, lightweight, and easy to toss in my backpack without worrying about it taking up space. If you’re looking for a good product that provides 500gb of storage without spending a fortune, this is an easy recommendation. I’d definitely buy another one. Thank you! 👍👍👍😎😎😎 ... show more
Reviewed in the United States on July 26, 2026 by Cameron Cruz

Budget-Friendly External Drive Is Viable Secondary Backup Option
Capacity: 500GB Color: Black
I got this external drive in order to back up and offload files from my iMac to free up space on my computer's internal hard drive. I had it initialized and ready to use within minutes. I primarily use a Mac, but I set it up so that I can read and write files across both Mac and PC systems. It's incredibly easy to use. After initializing the drive, it instantly mounted to my desktop and was ready for transfers. It uses a standard USB 3.0 Micro-B connector on the drive side and plugs into your computer via USB-A. For standard file transfers, it offers solid read/write speeds. I moved over several folders containing multiple gigabytes of data without a hitch. The drive has a sleek, textured look that sits comfortably on my desk. It's also compact enough to store easily in a fireproof safe or travel case. While it includes a 3-year manufacturer warranty, it lists conditions that void coverage, including damage from drops or misuse. It also does not cover data loss or restoration services, so keep that in mind if warranty coverage is a key deciding factor for you. One of the main drawbacks of mechanical HDDs is their sensitivity to physical impacts. This type of drive is also best suited for archiving documents, music, and photos. So, if you regularly work with large, multi-gigabyte video renders, transfer speeds will feel noticeably slower. I'm using this hard drive as a secondary fail-safe—a "backup to my backup"—in case anything happens to my primary external drives. Overall, I'm pleased with the reasonable price, the storage capacity, and its cross-platform compatibility. It's reliable for freeing up space on an internal desktop drive. Depending on your intended workload, it's a great budget-friendly option! ... show more
Reviewed in the United States on October 11, 2026 by Brent Hinson

Xbox One external Drive works well
Capacity: 500GB Color: Black
Nice little 500Gb external drive for my Xbox. It was super easy to install. Plugged it in, selected the proper format option, and done. Good value. I haven’t had it long enough to evaluate its durability but I have no reason to expect that it won’t last.
Reviewed in the United States on September 27, 2026 by Marine Gunner

Great Storage, Beautiful Color, and Easy to Carry
Capacity: 500GB Color: Pink
I needed an external hard drive to store a large amount of information and free up space on my devices, and this one has been very useful. It has plenty of storage for my photos, videos, documents, and other important files. One thing I really liked is the color. In person, it looks even prettier and more pink than it does in the product pictures. I was pleasantly surprised by how nice it looks. It’s also very portable and easy to handle, so I can move it around or take it with me without any inconvenience. Overall, it has been a practical and useful option for keeping a lot of information organized in one place. I’m very happy with it and would recommend it. ... show more
Reviewed in the United States on September 17, 2026 by Roxy Recommends

Unsure of usage
Capacity: 1TB Color: Black
I’m still not quite sure if I’m doing this correctly. I transferred a lot of photos from my iPhone to this using my Mac laptop. HOWEVER, when I went back to look at the stored photos I was unable to open them. I had to delete them all. Also, the reason why I purchased this is because I have about 50k photos/videos on my phone and it’s starting to slow down. I’m afraid to transfer them delete them off my phone and end up losing them. How can I get this done? 🥴🥴 ... show more
Reviewed in the United States on September 27, 2026 by Ally
Checking for best price...