SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter (SDSQXA1-512G-GN6MA)
Bottom line: The SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter ($117.99 on Amazon as of 2026-10-06): Up to 160MB/s read speed on compatible hosts; main trade-off: 160MB/s read requires a UHS-I host that can actually hit it.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Up to 160MB/s read speed on compatible hosts
- ✓ U3 and V30 rated for sustained 4K UHD video capture
- ✓ A2 rating speeds up app loading and in-app performance
- ✓ Temperature, water, shock, and x-ray proof construction
Cons
- ✗ 160MB/s read requires a UHS-I host that can actually hit it
- ✗ 90MB/s write trails newer V60 and V90 cards
- ✗ A2 gains only appear on A2-capable host devices
- ✗ Costs more per GB than lower-tier U1 microSD cards
Manufacturer description
Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds Up to 90MB/s write speeds for fast Shooting; Requires compatible devices capable of reaching such speeds 4K UHD and Full HD Ready (2) with UHS Speed Class 3 (U3) and video Speed Class 30 (V30) (5)
SpecPicks Verdict
SpecPicks scored SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Sandisk's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How fast is the SanDisk 512GB Extreme microSDXC card?
It reads at up to 160MB/s and writes at up to 90MB/s. Both figures require a host device capable of reaching those speeds; slower readers and older phones will cap throughput below that.
Can this card record 4K video without dropping frames?
Yes. It carries UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, which is the sustained write tier 4K UHD and Full HD recording require.
What does the A2 rating actually do?
A2 is an application performance class covering faster app loading and in-app responsiveness when software runs from the card. Your device also needs to support A2 for the benefit to apply.
Does it come with an SD adapter?
Yes, a full-size SD adapter is included, so you can use the card in laptops, card readers, and cameras with standard SD slots as well as microSD hosts.
Which devices is this card compatible with?
It works with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I host devices. Confirm your device supports 512GB microSDXC capacities before buying.
Key Features
- Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds
- Up to 90MB/s write speeds for fast Shooting; Requires compatible devices capable of reaching such speeds
- 4K UHD and Full HD Ready (2) with UHS Speed Class 3 (U3) and video Speed Class 30 (V30) (5)
- Rated A2 for faster loading and in app Performance (8). Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices
- Built for and tested in harsh conditions: temperature Proof, Water Proof, shock Proof and x ray Proof(4)
- Get the SanDisk Memory Zone app for Easy file management (available on Google Play) (3)
Full Specifications
| Size | 512GB |
|---|---|
| Brand | Sandisk |
| Color | Red |
| Model | 6.19659E+11 |
| Warranty | Lifetime Limited Warranty |
| UnitCount | 1 |
| ReleaseDate | 2019-04-24T00:00:01Z |
| Manufacturer | Western Digital Technologies, Inc. |
| ItemPartNumber | 619659173760 |
| Full listing title | SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-512G-GN6MA |
Ready to buy?
SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-512G-GN6MA is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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