SanDisk Ultra microSD UHS-I Card 512GB Bundle

Expansive 512 GB microSD storage

The SanDisk Ultra microSD UHS-I card provides 512 GB of capacity for Android smartphones, tablets, digital cameras and laptops running macOS 10.13+ or Windows 10+. It targets users who need a single card for large media libraries, apps and documents without juggling multiple smaller cards. The A1 performance rating ensures faster app loading and smoother operation directly from the card.

Read speeds up to 195 MB/s and A1 rating

This 512 GB model delivers sequential read speeds up to 195 MB/s, significantly reducing transfer times for large files such as Full HD video and high-resolution photos. The A1 rating guarantees a minimum random read and write performance for app data, so installed applications launch and run responsively. Write speeds are lower than the peak read figure, so sustained recording of very high-bitrate video may exceed the card's steady write capability.

UHS-I interface limits peak throughput

The card uses the UHS-I bus, which caps maximum theoretical bandwidth below the 195 MB/s marketing figure; real-world sustained speeds depend on the host device's controller and file system overhead. Devices without UHS-I support will fall back to slower bus modes, further reducing throughput. Buyers needing guaranteed minimum write speeds for professional video workflows or seeking higher bus speeds such as UHS-II or UHS-III should look elsewhere.