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Transcend UHS-I U1 300S MicroSDXC/SDHC (16GB/32GB/64GB/128GB)


SKU: Categories: Storage Device, Memory Card
  • Description
  • Specification
  • Warranty
  • Reviews (0)

A good fit for mobile app storage

It’s common for users to install and run mobile apps from microSD cards in order to free device memory. Random read/write performance is thus crucial. Transcend's microSDXC/SDHC 300S memory cards are a great fit for storing mobile apps.


Introducing Application Performance Class

The Application Performance Class was introduced to adapt this new trend. Transcend's microSDXC/SDHC 300S memory cards meet the new A1 standards, delivering minimum random read of 1,500 IOPS and random write of 500 IOPS, and sustained sequential speeds of at least 10MB/s.

A1 compliance applies only to 128GB capacity cards.


Show the transfer capabilities

Transcend's microSDXC/SDHC 300S memory cards meet both the UHS Speed Class 3 (U3) and the UHS Video Speed Class 30 (V30) standards for 4K Ultra HD video recordings, with read/write speeds of up to 95MB/s and 45MB/s respectively.

U3 and V30 compliance applies only to 128GB capacity cards.


Built for extremes

To deliver the best performance and stability, Transcend's microSD memory cards are tested to withstand extreme conditions.

- Waterproof: meet JIS IPX7 standards that can withstand immersion in 1 meter of water for up to 30 minutes.

- Temperature proof: perform in temperature extremes from -25°C to 85°C.

- Static proof: meet EMC IEC61000-4-2 standards and withstand static electricity.

- X-ray proof: meet the ISO7816-1 standard and are immune to airport X-rays.

- Shock proof: provide excellent shock, vibration, bending and twisting resistance.


RecoveRx software

Transcend offers exclusive RecoveRx software, a free data recovery utility that allows you to search deep within a storage device for traces of erased files including digital photos, documents, music and videos.

Warranty: 5 years

Dimensions (Max.): 11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04")

Weight (Max.): 0.4 g (0.01 oz)

Flash Type: 3D NAND flash

Operating Temperature: -25°C (-13°F) ~ 85°C (185°F)

Operating Voltage: 2.7V ~ 3.6V

Speed Class: 



Class 10



Read Speed (Max.): 95 MB/s

Write Speed (Max.): 45 MB/s

Insertion/Removal Cycles: 10,000


Speed may vary due to host hardware, software, usage, and storage capacity.

5 years warranty


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