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The SanDisk Extreme PRO 512GB microSDXC is a UHS-I card rated U3, V30, C10 and A2, with rated reads up to 250MB/s and writes up to 170MB/s at this capacity. That makes it a solid pick for action cameras, drones and phones shooting 4K and 5K video, and the A2 rating helps with running apps from the card on Android devices. It ships with a full-size SD adapter for card readers and slot-equipped laptops. Rivals like the Samsung PRO Plus and Lexar Professional 1066x match it on V30 video rating, but few UHS-I cards pair this write speed with SanDisk's broad durability claims.
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Lowest price we've seen: $189.99 on Nov 8 at Newegg. Tracked across 1 store since Nov 8.
Owners rate it highly, with 4.7 out of 5 from 1,504 ratings. Most praise reliable 4K recording and fast transfers; a minority report slower real-world writes than the headline figure.
The SanDisk Extreme PRO is a 512GB microSDXC memory card that comes with an SD adapter. It is rated UHS-I, U3, V30, C10 and A2. It is made for capturing 5K point-of-view video and 4K UHD video.
The card reads at up to 250MB/s and writes at up to 170MB/s. The A2 rating loads apps faster and runs them smoothly. The card is built to be temperature-proof, humidity-proof, waterproof, shock-proof, drop-proof, magnet-proof, X-ray-proof and wear-out proof.
