Transcend

Transcend 1TB SJ25C3S, Portable External Hard Drive, Sleek Aluminum casing, Type C, Silver - TS1TSJ25C3S

Name: Transcend 1TB SJ25C3S, Portable External Hard Drive, Sleek Aluminum casing, Type C, Silver - TS1TSJ25C3S
Brand: Transcend
SKU: B07L9S552F
Price: 145.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-21

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$145.99

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View Current Price on Amazon → Compare to similar external storage

*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.

Bottom line: The Transcend 1TB SJ25C3S, Portable External Hard Drive, Sleek Aluminum casing, Type C, Silver - TS1TSJ25C3S is a specs-and-price decision rather than a crowd-consensus one in the external storage category, priced around $145.99. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Backed by Transcend's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

The Transcend StoreJet 25C3S packs 1TB of portable storage into an aluminum shell measuring just 9.95mm thick, so it slides into a laptop sleeve or briefcase pocket without adding bulk. The casing is polished, sandblasted, and anodized in silver, giving it a finish that sits comfortably next to a MacBook or an aluminum-bodied ultrabook rather than looking like an afterthought. Connectivity runs over USB 3.1 Gen 1 with Type-C, and Transcend includes UASP (USB Attached SCSI Protocol) support for transfer rates of up to 5Gbps. That matters when you are moving a folder of RAW photos or a project…

SpecPicks Verdict

SpecPicks scored Transcend 1TB SJ25C3S, Portable External Hard Drive, Sleek Aluminum… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the external storage category. Transcend's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Frequently Asked Questions

Is this a solid state drive or a regular hard drive?

It is a portable external hard drive, not an SSD. That is why Transcend can offer capacities up to 2TB in a 9.95mm enclosure at this size and price point.

How fast does the Transcend StoreJet 25C3S transfer files?

The interface is USB 3.1 Gen 1 with UASP (USB Attached SCSI Protocol) support, rated up to 5Gbps. Real-world speed is limited by the mechanical drive inside, not the port.

Does it come with a USB-C cable, and will it work with my laptop?

The drive uses a Type-C connector on the drive side. Check the product listing for the exact cable included and the ports on your specific machine before ordering.

How thick is it and will it fit in a laptop bag?

It measures 9.95mm thick, so it lies flat in a laptop sleeve, briefcase pocket, or backpack organizer without noticeable bulk.

Can I back up my Dropbox and Google Drive files to it?

Yes. The bundled Transcend Elite software backs up files from cloud services including Dropbox and Google Drive onto the StoreJet drive for a local copy.

Key Features

A touch of opulence at the tips of your fingers, Transcend's lightweight StoreJet 25C3N is more than an external hard drive—it's a fashion statement
The sleek aluminum casing has been polished, sandblasted, and anodized. It reflects your good taste while complementing your other tech devices
The StoreJet 25C3N external hard drive is ultra-slim at just 9.95mm, taking up little space in your bag or briefcase
The StoreJet 25C3N is equipped with the USB 3.1 Gen 1 interface with the support of UASP (USB Attached SCSI Protocol), providing lightning-fast transfer rates of up to 5Gbps
While slim, the StoreJet 25C3N comes in high capacities of up to 2TB, so you can store and back up all of your files

Full Specifications

Brand	Transcend
Color	Black
Model Name	TS1TSJ25C3S
Read Speed	5 gigabytes_per_second
Form Factor	2.5-inch
Media Speed	625 MB/s
Connectivity	USB
Model Number	TS1TSJ25C3S
Built-In Media	HDD
Item Type Name	TS1TSJ25C3S
Hard-Drive Size	1 TB
Mfr Part Number	TS1TSJ25C3S
Number of Items	1
Special Feature	Portable
Installation Type	External Hard Drive
Compatible Devices	Desktop
Data Transfer Rate	5000 megabits_per_second
Enclosure Material	Aluminum
Additional Features	Portable
Hard Disk Interface	USB 3.0

Ready to buy?

Transcend 1TB SJ25C3S, Portable External Hard Drive, Sleek Aluminum casing, Type C, Silver - TS1TSJ25C3S is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.