SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter (SDSQXA1-128G-GN6MA)
Bottom line: The SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter ($38.95 on Amazon as of 2026-10-07): Up to 160MB/s read speeds cut 4K footage offload time; main trade-off: 160MB/s read needs a UHS-I compatible reader or device to hit.
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*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Up to 160MB/s read speeds cut 4K footage offload time
- ✓ U3 and V30 ratings meet 4K UHD sustained-write requirements
- ✓ A2 rating targets faster app launches and in-game load times
- ✓ Up to 90MB/s writes keep burst shooting from stalling
Cons
- ✗ 160MB/s read needs a UHS-I compatible reader or device to hit
- ✗ 90MB/s write is below top-tier V60/V90 cards for high-bitrate video
- ✗ A2 gains depend on the host device supporting the A2 command set
- ✗ 128GB fills fast at 4K bitrates compared to 256GB and 512GB options
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 with UHS speed class 3 (U3) and video speed class 30 (V30)
SpecPicks Verdict
SpecPicks scored SanDisk 128GB 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
Is this microSD card fast enough for 4K video recording?
Yes. It carries UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, which are the sustained-write tiers cameras and drones require for 4K UHD, and SanDisk rates write speeds up to 90MB/s.
Does the SanDisk Extreme work in a Steam Deck, Switch, or Raspberry Pi?
It is a standard microSDXC card with an A2 application performance rating, which targets faster random reads for app and game loading. Confirm the card format your specific device supports on the product listing before ordering.
Does it come with a full-size SD adapter?
Yes, this SKU (SDSQXA1-128G-GN6MA) ships with a microSD-to-SD adapter, so you can use it in cameras, laptops, and card readers that take full-size SD.
Will I actually get 160MB/s read speeds?
Only with a device or card reader capable of reaching those speeds. SanDisk notes that both the up-to-160MB/s read and up-to-90MB/s write figures require compatible hardware; older USB 2.0 readers will be the bottleneck.
How durable is this card?
SanDisk states the Extreme line is built for and tested in harsh conditions, rated temperature proof, water proof, shock proof, and X-ray proof. Check the product listing for current warranty terms.
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 with UHS speed class 3 (U3) and video speed class 30 (V30)
- Rated A2 for faster loading and in app performance
- Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof
- Get the SanDisk memory zone app for easy file management (available on Google Play)
Full Specifications
| Size | 128GB |
|---|---|
| Brand | Sandisk |
| Color | Red |
| Model | SDSQXA1-128G-GN6MA |
| Warranty | Lifetime Limited Warranty |
| UnitCount | 1 |
| ReleaseDate | 2019-01-08T00:00:01Z |
| Manufacturer | Sandisk Technologies, Inc. |
| IsAdultProduct | false |
| ItemPartNumber | SDSQXA1-128G-GN6MA |
| Full listing title | SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-GN6MA |
Ready to buy?
SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-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 2026-10-07. Price and availability subject to change.
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