SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC

The SanDisk Extreme PRO microSDXC 512GB is engineered for users who demand both generous storage and high-speed performance from a memory card no larger than a fingernail. Powered by SanDisk's QuickFlow technology, the card achieves read speeds of up to 200 MB/s and write speeds of up to 140 MB/s, making it one of the fastest UHS-I microSD cards available. These speeds pay dividends when transferring large 4K video files to a computer or when burst-shooting high-resolution photos — tasks where slower cards create frustrating bottlenecks. The U3 and V30 speed class ratings guarantee a minimum sustained write speed of 30 MB/s, the baseline required for smooth, uninterrupted 4K UHD video recording in action cameras and drones.

Beyond raw throughput, the Extreme PRO carries an A2 application performance rating, which sets minimum random read and write IOPS thresholds. For Android users who install or run applications directly from the card, this translates to noticeably snappier app launches and more fluid multitasking. The 512GB capacity offers enough room for hours of 4K footage, tens of thousands of photos, or a large library of apps and media. In the box, SanDisk includes a full-size SD adapter for use in laptops, cameras, and card readers, as well as a license for RescuePRO Deluxe data recovery software — a useful safety net for recovering accidentally deleted files. Whether it is slotted into a GoPro, a DJI drone, or a Samsung Galaxy, this card covers the full spectrum of demanding mobile storage scenarios.