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SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC — main product image
SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC
SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC
SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC
SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC
SanDisk SDSQXCD-512G-GN6MA 512GB Extreme PRO microSDXC
SanDisk

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

★★★★★4.8 (4214 reviews)
4KUHD

Capture 4K video and transfer files at up to 200 MB/s with SanDisk's 512GB Extreme PRO microSDXC — built for phones, drones, and action cams.

$139.15*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

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.

Key Features

The SanDisk Extreme Pro microSDXC is ideal for all Android smartphones and tablets, as well as drones or action cams

The microSD card ensures better app performance and faster charging thanks to the existing A2 performance standard

With a read speed of 200 MB/s and a write speed of 140 MB/s, you can transfer your data extremely quickly thanks to SanDisk QuickFlow technology

Make lossless 4K UHD video recordings thanks to UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) with the microSD card for smartphones

Includes: SanDisk Extreme PRO microSDXC UHS-I Memory Card 512 GB + Adapter and RescuePRO Deluxe (for Smartphones, Action Cameras or Drones, A2, V30, U3, 200 MB/s Transmission)

Specifications

Brand
SanDisk
Model
SDSQXCD-512G-GN6MA
Capacity
512 GB
Card Type
microSDXC UHS-I
Read Speed
Up to 200 MB/s
Write Speed
Up to 140 MB/s
Speed Class
Class 10, U3, V30, A2
Technology
SanDisk QuickFlow
Compatibility
Android Smartphones, Action Cameras, Drones
Included Accessories
Full-Size SD Adapter, RescuePRO Deluxe Software

Pros & Cons

👍 Pros

  • 200 MB/s read speed enables fast file transfers to computers and other devices
  • V30 and U3 ratings guarantee sustained writes for uninterrupted 4K UHD recording
  • A2 app performance standard improves responsiveness when running apps from the card
  • 512GB capacity provides ample storage for large video libraries and photo collections
  • Includes full-size SD adapter and RescuePRO Deluxe data recovery software

👎 Cons

  • Maximum speeds require a UHS-I compatible device — older readers will not reach rated performance
  • 140 MB/s write speed, while fast, lags behind UHS-II cards used in high-end cinema cameras
  • No built-in write-protect switch on the microSD form factor
  • 512GB capacity sits at a higher price point that may not suit users with modest storage needs

Frequently Asked Questions

The SanDisk Extreme PRO 512GB delivers up to 200 MB/s read and 140 MB/s write speeds using SanDisk's QuickFlow technology, though actual speeds may vary depending on the host device and conditions.
The A2 rating means the card meets minimum thresholds for random read/write performance, which translates to faster app loading and smoother operation when apps are stored on or run from the card on compatible Android devices.
Yes. It carries both UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, guaranteeing a minimum sustained write speed of 30 MB/s — the threshold required for reliable 4K UHD video capture.
Yes, the package includes a full-size SD adapter so you can use the card in devices with a standard SD slot, such as laptops and DSLR cameras.
RescuePRO Deluxe is a data recovery software license included with the card. It can help recover accidentally deleted photos, videos, and files from the card.

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