Want to save space on your mobile device by running apps from a memory card? Transcend's microSDXC/SDHC 300S cards are the right choice! Compliant with the latest speed class, the cards boast excellent random read/write speed, perfect for retrieving small pieces of data from random locations and speeding app launch time.
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-256GB 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-256GB capacity cards.
Compliant with Application Performance Class 1 (A1), UHS Speed Class 3 (U3), and UHS Video Speed Class 30 (V30) standards
Up to 100 MB/s read 85 MB/s write
Ideal for smartphones, tablets, and digital cameras
Perfect for a smooth and uninterrupted 4K video capturing
2.7v - 3.6v
-25c to 85c
-40c to +85c
Data transfer rate
Read Speed (Max.)100MB/s
Write Speed (Max.)40MB/s
Size (W x H x D)
11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04")
3D NAND flash
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