TRANSCEND Micro Sdxc Card 300s 128GB Uhs-i U3 Without Adapter

Transcend 128GB MicroSDXC SDHC 300S is a high-capacity microSD card designed for expanding mobile device storage and running apps from external memory. Compliant with the Application Performance Class A1, this card delivers improved random read/write performance for faster app launch and responsive mobile app storage. The card supports UHS Speed Class 3 (U3) and Video Speed Class V30 on supported capacities, offers up to 95 MB/s read and 40 MB/s write speed, and is built to resist water, temperature extremes, static, X-rays and physical shock.

Advantages

This Transcend 128GB microSDXC card provides A1-rated minimum random read/write IOPS (1,500 read / 500 write) and sustained sequential performance suitable for app storage and smoother app operation. With U3 and V30 compliance on compatible models it supports 4K Ultra HD video recording, while sequential transfer speeds up to 95 MB/s enable fast file transfers. The card is tested for durability — waterproof (IPX7), temperature-proof (-25°C to 85°C), static-resistant, X-ray-proof and shockproof — and includes access to Transcend's RecoveRx software for file recovery.

Suitable for

• Expanding smartphone or tablet storage to install and run mobile apps
• Recording high-resolution and 4K video (on U3/V30‑compatible capacities)
• Storing photos, music, documents and other media
• Use in devices requiring durable media (outdoor or mobile use)

Key specifications

• Capacity: 128 GB
• Flash card type: MicroSDXC (SDHC/SDXC 300S series)
• Read speed: up to 95 MB/s
• Write speed: up to 40 MB/s
• Performance classes: A1, UHS Speed Class U3, Video Speed Class V30 (where applicable)
• Flash memory class: Class 10
• Operating temperature: -25°C to 85°C
• Durability: IPX7 waterproof, static proof (IEC61000-4-2), X-ray proof (ISO7816-1), shock/vibration resistant
• Colour: Silver

How to use

Insert the Transcend microSDXC card into the compatible microSD slot of your smartphone, tablet, camera or other device following the device manufacturer's instructions. If required, format the card in the host device before first use to ensure compatibility. To run or move apps to the card, use your device settings to change app storage location where supported by the operating system. For video recording, select the card as the storage destination in your device's camera settings.

Recommendations

Use the card for app storage and media on devices that support microSDXC and A1/U3/V30 performance classes. Regularly back up important files and use Transcend RecoveRx if you need to attempt recovery of deleted data. Avoid removing the card during data transfer and format the card in-device when switching between different devices to reduce compatibility issues.