SDXC flash card OWC Atlas Ultra 512 GB UHS-II, 300 MB/s read, 250 MB/s write, V90, waterproof

OWC Atlas Ultra SDXC UHS-II 512 GB is a high-capacity SD memory card engineered for demanding photo and video workflows. With 512 GB of storage and UHS-II interface it supports sustained high-bitrate recording and fast file transfers. The card offers real-world performance up to 300 MB/s read and up to 250 MB/s write, and meets V90 video speed class requirements for reliable 4K, 6K and other high-resolution capture. The product is designed to resist water, dust, shocks, X-rays and bending for dependable use in the field.

Advantages

The Atlas Ultra delivers a guaranteed minimum sustained write of 90 MB/s, which reduces the risk of dropped frames during continuous high-resolution video recording and long RAW burst sequences. High read speeds accelerate offloading and workflow efficiency when importing large photo or video files to a computer. Rugged construction and IP67-level protection allow safe use in outdoor and travel scenarios while backward compatibility with earlier SD devices ensures broad support across cameras and readers.

Suitable for

• Professional and enthusiast DSLRs and mirrorless cameras for high-speed burst photography
• 4K, 6K and high-bitrate video recording where V90 performance is required
• Fieldwork and location shoots where environmental protection (waterproof, dustproof) is needed
• Fast offloading and editing workflows that benefit from high read speeds

Key specifications

• Capacity: 512 GB
• Interface: SDXC UHS-II
• Maximum read speed: up to 300 MB/s (real-world)
• Maximum write speed: up to 250 MB/s (real-world)
• Minimum sustained write speed: 90 MB/s (V90 class)
• Durability: resistant to shocks, bending and X-rays; IP67 dust- and waterproof rating
• Colour: Black, Purple

How to use

Insert the SDXC card into a compatible UHS-II camera slot or SD UHS-II card reader. For optimal recording performance use cameras and recorders that support UHS-II and V90 speed classes. Format the card in the camera before first use to ensure file system compatibility and maximum available capacity. When recording high-bitrate video or long RAW burst sequences monitor camera settings (bitrate, resolution, recording limits) and stop/start recordings according to the device’s guidance to avoid exceeding file or temperature limits.

Recommendations

To maintain performance, avoid filling the card to maximum capacity for extended recording sessions; regularly back up content to a separate storage device and use a UHS-II capable reader for fastest transfers. Store the card in a protective case when not in use and follow your camera manufacturer’s guidance for formatting and firmware updates.