As a manufacturing and trading integrated company specializing in computer storage accessories, UnionSine offers a wide range of products — from compact portable drives to high-capacity 3.5" external hard drives and high-speed enclosures.
With fast data transfer, reliable performance, and excellent value, UnionSine has become a trusted brand for work, gaming, and multimedia storage worldwide.

Main Features

✔【Stable Data Transfer】

Equipped with USB 3.0 and backward compatible with USB 2.0, it delivers ultra-fast transfer speeds—up to 125MB/s read and 103MB/s write in theory.

✔【Plug and Play】

No driver or software installation required. Just plug it in and start using it instantly with ease.

✔【Slim and Lightweight Design】

Sleek and minimalist appearance with a slim, compact body that saves space. Perfectly portable, it fits easily into pockets or backpacks for hassle-free everyday carry.

✔【Dual Protection】

The hard drive chip is wrapped in an aluminum foil shielding layer that helps reduce external electromagnetic interference and improves heat dissipation for more stable data transmission.

✔【Wide Compatibility】

Compatible with Windows (11/10/8/7/Vista/XP), Mac OS X, Linux, and Android systems. Supports desktops, laptops, Mac computers, smart TVs, PS4, PS5, and Xbox.

▼【Master Control Chip】FLightning-Fast Response / Stable Operation / Seamless Experience

▼【Compact Design】Lightweight and portable, easy to carry wherever you go.

▼About Capacity

The capacity discrepancy stems from different measurement standards (IEC 80000-13): Manufacturers use the decimal system (1GB = 1000MB), while computers adopt the binary system (1GB = 1024MB).
Our tests confirm that Windows displays capacity based on binary values (resulting in lower shown capacity), whereas macOS shows the full decimal value.
This is a common industry standard across all storage products and can be verified via the [IEC website] or from manufacturers’ official "actual capacity specifications".

Calculation:Manufacturer's bytes ÷ 1,073,741,824 = Displayed value

1TB Portable Hard Drive Display Differences Across Systems
• Windows: ≈931GB
• Mac: 1TB
(Note: Actual capacity is same, display varies by OS calculation)

Package Contents

■ Portable Hard Disk * 1
■ USB 3.0 Cable * 1
■ Product Manual * 1

Friendly Reminder

Please make sure your address, phone number, postal code, and full name are correct when placing the order (Russian customers must provide their full name). If you have already placed an order and need to change the information, please cancel the order and place a new one.

2.If you experience any issues after receiving the product, please contact us before leaving negative feedback. Some problems may simply be due to improper use or misunderstanding. We're happy to assist and will do our best to ensure your satisfaction.

3.Due to time zone differences, our response may not be immediate. But rest assured — we will reply as soon as we are back in the office.

4.If you’re satisfied with our product, we would really appreciate your positive feedback.