Amazon Basics
microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 256GB, Black
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
Product Description An Amazon Brand. From the Manufacturer Amazon Basics
SpecPicks Verdict
SpecPicks classifies Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3… as a category leader on buyer feedback in the external storage category, based on 150,659 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Amazon Basics's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ Large, well-vetted feedback pool (150,659 reviews)
- ✓ Backed by Amazon Basics's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Universal Compatibility — NOT for Nintendo Switch 2, but Compatible with Nintendo Switch. Works seamlessly with GoPro/action cams, DSLRs, drones. Always check your device's max supported capacity.
- Reliable Real-World Capacity - Labeled Capacities/Usable Capacities 64GB/≥58GB; 128GB/≥116GB; 256GB/≥232GB; 512GB/≥465GB; 1TB/≥908GB (Due to OS formatting and binary/decimal calculation differences)
- 4K & Full HD Ready — Optimized for high-bitrate video recording and burst-mode photography. Handles RAW files, time-lapse sequences, and smooth 4K UHD playback without lag or frame drops.
- UHS-I U3 + A2 Certified Speed — Up to 100MB/s read speed (lab-tested); meets Video Speed Class V30 and Application Class A2 for fast app loading, responsive multitasking, and reliable performance on Android devices.
- Built for Adventure — Shock-resistant, IPX6 water-resistant, and rated for extreme temperatures (−10°C to +80°C). Also resistant to X-rays and magnetic fields — ideal for travel, outdoor use, and dashcams.
Full Specifications
| UPC | 840095874038 |
|---|---|
| ASIN | B08TJZDJ4D |
| Brand | Amazon Basics |
| Color | Black |
| Model Name | Amazon Basics - MicroSDXC, 512 GB |
| Read Speed | 100 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Media Speed | 90 MB per second |
| Manufacturer | Amazon |
| Model Number | LSMICRO256GU3 |
| Warranty Type | Limited |
| Customer Reviews | 4.74.7 out of 5 stars(147,854)4.7 out of 5 stars |
| Best Sellers Rank | #59 in Our Brands (See Top 100 in Our Brands)#2 in Micro SD Memory Cards |
| Flash Memory Type | Micro SDXC |
Ready to buy?
Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 256GB, Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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