How can we help you?

Portable Storage for Mac

StoreJet® 300 Portable Hard Drive

Introducing Transcend's StoreJet® for Mac® SJM300 Portable Hard Drive for your Mac. Besides offering immense storage space, the SJM300 is also equipped with Thunderbolt™ and SuperSpeed USB 3.0 interfaces, offering unmatched transfer rates to boost your productivity. And, a sturdy metallic design complements your Mac with a sleek and elegant look.


Thunderbolt interface for Lightning-fast speeds

With advanced Thunderbolt technology that provides two channels on the same connector, the SJM300 portable hard drive can transmit and receive at the same time, and delivers unparalleled transfer rates of up to 10 Gb/s*. The drive is also equipped with a SuperSpeed USB 3.0 port, providing 10 times the bandwidth of USB 2.0. Additionally, a Thunderbolt port can daisy-chain up to 6 Thunderbolt devices** without losing throughput and transfer rates.

*Maximum interface transfer rates shown. Performance varies by capacity, user hardware, and system configuration.
**As the SJM300 does not have a Thunderbolt pass-through port, it must be the last device on a daisy-chain.

Craving more space? Here you go.

Connect the SJM300 portable hard drive and your Mac's storage space is instantly expanded by 2TB. Save up to 512 hours of Full HD video, over 32,000 hours of digital music, or 960,000+ high resolution digital images.

Convenient, sturdy, elegant design.

The SJM300 is natively formatted in HFS+ for your Mac and fully supports Time Machine®. Its internal hard drive suspension system gives your hard drive comprehensive protection. Moreover, the high-quality metallic design complements your Mac with a sleek and elegant look.

Transcend Elite software

Transcend Elite includes user-friendly applications that help you manage data and boost productivity. With Elite, your Transcend storage device keeps important files organized, protected, and up-to-date.

Thunderbolt and USB 3.0 cables included.

All necessary cables, including a Thunderbolt and a USB 3.0 cable, are included. Just plug and play.

Everything you need.

The package includes:

  • SJM300 Portable Hard Drive
  • Thunderbolt Cable
  • USB 3.0 cable
  • Quick Start Guide
  • Travel Pouch
  • Warranty Card

Note: Mac and Time Machine are trademarks of Apple Inc. Thunderbolt is the trademark of Intel Inc.

There's more!

Click the comparison chart below to find the portable device that suits you best.

Comparison Chart


Dimensions 125.9mm x 78.2mm x 17.2 mm (4.96" x 3.08" x 0.68")
Weight 240 g (8.47 oz)
Operation Voltage Thunderbolt 15V / USB 5V
Operating Temperature 5°C (41°F) ~ 55°C (131°F)
Storage Media 2.5" SATA Hard Drive
Certificates CE, FCC, BSMI
Connection Interface Thunderbolt / USB 3.0
Warranty Three-year Limited Warranty

Please access here for more information about the Transcend Warranty Policy.
Note For use on non-Apple computers (Windows PCs), please reformat the drive in FAT32, exFAT or NTFS.
System Requirements Desktop or notebook computer with USB port (USB3.0 port needed for
USB3.0 performance) or Thunderbolt interface with one of the following
Operating Systems:
  • Microsoft Windows 7 or later
  • Mac OS X 10.7 or later


Best Price


Order Information

  • TS2TSJM300