SSD-Level Speed with SD Express – Leveraging PCIe Gen3 x1 and NVMe protocols, it delivers up to 800 MB/s read and 700 MB/s write, making it 2.7× faster than UHS‑II and 8× faster than standard UHS‑I cards Reliable Video & Photography Performance – Supports Video Speed Class V30 and UHS Speed Class U3/Class 10, with a guaranteed sustained write rate of nearly 150 MB/s, ideal for capturing smooth 4K/8K content High-Capacity Options for Gamers & Pros – Available in 256 GB and 512 GB sizes, perfect for storing large game libraries (like on Nintendo Switch 2) or high-res media files Miniature SSD in microSD Form – Delivers near-SSD performance in a compact 15 × 11 × 1 mm package, making it suitable for smartphones, drones, VR devices, action cams, and smart home gear Built to Last – Backed by a lifetime warranty, plus SD Association certification and robust design for secure, dependable long-term use ADATA 512GB Premier Extreme microSDXC SD7.1 Express Card for Nintendo Switch 2, PCIe Gen3 x1 / U3 / C10 / V30, Up to 800/700 MB/s, 4K Video Recording, Compatible w/ASUS ROG Ally (UD512GEX3L1-C)