Flash Memory SanDisk 128GB UHS-I U3 V30 SDSDXXD-128G-GN4IN

The SanDisk 128GB UHS-I U3 V30 flash memory card delivers high-capacity removable storage with performance tuned for 4K UHD video and high-resolution still photography. With rated read speeds up to 170 MB/s and write speeds up to 90 MB/s, this SDXC card supports fast file transfers and sustained recording. The card is manufactured to withstand harsh conditions: it is temperature-proof, waterproof, shock-proof and X-ray-proof, providing reliable data protection for field use and travel.

Advantages

This SanDisk card combines high sustained write performance suitable for continuous 4K video capture with rapid read speeds for quick offload to computers. The UHS-I U3 V30 speed class ensures consistent recording performance while handling large RAW files and burst-mode photography. Physical durability and environmental protections reduce the risk of data loss during outdoor shoots or transit. The card’s 128GB capacity offers a balance between storage space and portability for professional and enthusiast workflows.

Suitable for

• 4K UHD video recording on mirrorless and DSLR cameras
• High-resolution still photography including RAW and burst shooting
• Portable storage and fast file transfer between devices
• Use in environments with moisture, temperature changes, or X-ray exposure

Key specifications

• Capacity: 128 GB
• Form factor: SDXC
• Bus interface: UHS-I
• Speed class: U3 (UHS Speed Class 3), V30 (Video Speed Class 30)
• Maximum read speed: up to 170 MB/s
• Maximum write speed: up to 90 MB/s
• Durability: temperature-proof, waterproof, shock-proof, X-ray-proof

How to use

Insert the SDXC card into the compatible camera or card reader with the label facing up until it clicks into place. Format the card in the camera before first use to ensure optimal file system settings for that device. When recording video, select the camera’s appropriate recording format and resolution (for example 4K UHD) to match the card’s sustained write capability. To transfer files, use a UHS-I compatible card reader for full-speed data offload to a computer.

Usage recommendations

For uninterrupted 4K recording, verify the camera’s firmware supports UHS-I U3 cards and format the card in-camera. Maintain at least one backup of important files; use the card primarily as working storage and regularly copy footage to a separate backup drive or cloud service. Avoid removing the card during read/write operations and store it in a protective case when not in use.