Amazon Basics microSDXC Memory Card with Full Size Adapter
- MicroSD Card
- More reviewed than 95%
A fast, ruggedized 128GB card for 4K recording and app storage, with the Switch 2 as a clear compatibility exception worth checking first.
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How it ranks among the 19 microsd cards we track
4.7★ across 97,500 Amazon ratings, Bayesian-smoothed toward the category average.
97,500 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
10,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 19 microsd cards we track - how the scorecard works · full microsd cards data report. Confidence: limited - incomplete product information.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 128GB microSDXC card rated A2 and U3, built for 4K video recording and fast app loading on phones, tablets and compatible handhelds. It ships with a full-size SD adapter for card readers.
Amazon Basics specifically calls out Nintendo Switch compatibility while flagging that the newer Switch 2 is not supported, worth checking before buying for a handheld. The listed 100MB/s read speed and A2/U3 certification target 4K footage and app performance, and usable capacity comes in under the labeled 128GB, as it does on any card, due to formatting overhead.
- 128GB microSDXC, A2 + U3 certified
- Up to 100MB/s read speed
- IPX6 water-resistant, shock and temperature rated
- Full-size adapter included
Who it's for
Works for phone and tablet storage expansion, dashcams, and original Nintendo Switch consoles needing extra game space. Not for the newer Nintendo Switch 2, which this card does not support.
Strengths and trade-offs
Drawn from this product's published specifications.
- A2 + U3 certified for fast app loading and 4K video
- Rated 100MB/s read speed
- Shock, water, temperature and X-ray resistant
- Includes a full-size SD adapter
- Not compatible with Nintendo Switch 2
- Usable capacity is below the 128GB label, around 116GB, due to formatting
Performance notes
UHS-I U3 and A2 certification bring reads up to 100MB/s in lab testing, aimed at smooth 4K playback and quicker app launches on Android devices rather than just file storage. The card is also shock-resistant, IPX6 water-resistant, and rated for -10C to 80C operation, with resistance to X-rays and magnetic fields.
Specifications
| Brand | Amazon Basics |
|---|
How it compares
This product against the closest alternatives we track in microsd cards.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Amazon Basics microSDXC Memory Card with Full Size AdapterThis product | 4.7 / 5 | 97,500 | 2.7 / 5 |
| SanDisk 128GB Extreme microSD UHS I Card for 4K Video on SmartphonesSanDisk | 4.8 / 5 | 15,300 | 4.8 / 5 |
| Patriot 64GB Micro SD V30 A1 Memory CardPatriot Memory | 4.5 / 5 | 12,900 | 4.7 / 5 |
| Samsung PRO Endurance 128GB microSDXC Memory Card with AdapterSamsung | 4.7 / 5 | 9,600 | 4.7 / 5 |
| GIGASTONE 128GB Micro SD Card 2-PackGigastone | 4.7 / 5 | 8,900 | 4.6 / 5 |
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Questions about the Amazon Basics microsd cards
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Amazon Basics 128GB microSD card work with Nintendo Switch?
It works with the original Nintendo Switch, but Amazon states it is not compatible with Nintendo Switch 2.
What is the actual usable capacity of this 128GB card?
Around 116GB or more, since labeled capacity differs from usable capacity due to OS formatting and binary versus decimal calculation.
Is this microSD card rated for 4K video?
Yes, its A2/U3 certification and up to 100MB/s read speed are built for 4K UHD recording and playback.