Transcend StoreJet 25H3 1TB USB 3.0



1. Introduction

Transcend Information. Inc. was founded in 1988 by Mr. Chung-Won Shu, Peter, with its headquarters in Taipei, Taiwan. Today, Transcend has become a leading global brand of digital storage, multimedia and industrial products with 14 offices worldwide. Not only do we design, develop, and manufacture all of our own products, but we also market and sell them.

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Official product link:

2. Packaging and accessories

The StoreJet 25H3 1TB model is packaged in a white box with red & silver accents.
The front side of the box presents the product using a general image of it, on the top part there is printed the logo of the manufacturer. On the lower part we find the model, the type of connection used and the capacity of the HDD.
The sides of the packaging are simple, on the top part there is printed the logo of the manufacturer while on the lower part there is printed the model name of the product.



The product comes with the following accessories:
–    1x Manual
–    1x USB 3.0 cable

3. Specifications

Brand: Transcend
Model: StoreJet 25H3 USB 3.0
Color: Blue/Purple
Capacity: 1TB
Dimension: 131.8mm×80.8mm×19.0mm
Form Factor: SATA 2.5″
Weight: 216g
Buffer: 8 MB
RPM: 5400
Op. Voltage: USB DC 5V
Op. Temperature: 5°C (41°F) ~ 55°C (131°F)
Connection Interface: USB 2.0/3.0
Power Saving Mode: 10 mins
One-Touch Backup: Yes
Warranty: 3 Years
System Compatibility:
Microsoft Windows XP/ Vista/ 7/ 8/ 8.1/ 10
Mac OS 10.7 or later
Linux Kernel 2.6.31 or later


–    Military-grade shock resistance (Based on U.S. military drop-test standards MIL-STD-810G 516.6).
–    Fully Compliant with the Hi-Speed USB 2.0 specification
–    Advanced 3-stage shock protection system
–    Durable anti-shock rubber outer case
–    Advanced internal hard drive suspension system
–    Quick Reconnect Button – after safely removing the hard drive from the system, press to reconnect the drive without having to unplug and replug the USB connector again
–    One Touch Auto-Backup button
–    256-bit AES file & folder encryption**
–    Exclusive Transcend Elite data management software

4. Visual inspection

The StoreJet 25H3 1TB model has a unique look, the HardDisk is covered entirely by a rubber/silicon case to dampen vibrations and shocks.
The front side is simple using a two-color design. On the lower part we can see the manufacturer’s logo.

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On the upper right corner we find the button for the One Touch Auto-Backup function.
This button is also an activity LED.

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The sides of the Hard Disk feature 4 spaces to prevent slipping.



The connector for the USB 3.0 cable is placed on the upper side of the Hard Disk. The connector is not covered by a cover.

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On the back side the rubberized material is covered by a cross/plus pattern. On the upper part there are printed both the name of the product, its capacity and the country of origin.

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The StoreJet 25H3 model is accompanied by several Software used to configure the Hard Drive and recover data.


Is used to format the Hard Drive, recover data and protect it by locking the Hard Drive.


StoreJet Toolbox

It’s a Software meant to configure the storage device. It offers functions such as Low Level Formatting and advanced formatting options.



Elite Data Management

This Software is capable of creating a Backup copy of the entire Hard Disk, being compatible with the One Touch Auto-Backup button. Another feature of this software is the possibility of encrypting and decrypting the storage device. The Sync feature is designed to update the Firmware of the device.



5. Testing

To test the Hard Disk the following software was used: ATTO Disk Benchmark, HD Tune Pro 5.60, Crystal DiskMark 5.1.0. In order to obtain a precise result each test was performed three times.

Crystal DiskMark 5.1.0 Read



Crystal DiskMark 5.1.0 Write



ATTO Disk Benchmark Read & Write



HD Tune Pro Read & Write






6. Final thoughts

Transcend StoreJet 25H3 1TB is a good & efficient storage solution for keeping data safe, being also a small & lightweight device, weighting just 216g. The StoreJet 25H3 model is available in two variants: blue and purple.
The Hard Disk is designed to withstand harsh conditions, thanks to its 3-stage shock protection system: Rubber case, Reinforced Hard Casing, Internal HDD Suspension Damper.
The StoreJet 25H3 model has military-grade shock resistance based on U.S. military drop-test standards MIL-STD-810G 516.6.
In conclusion, Transcend StoreJet 25H3 is an efficient storage device thanks to its construction and the materials used. The read & write speeds are good for a device in this price segment.

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