Amazon Basics microSDXC Memory Card 128GB
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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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ASIN: B08TJRVWV1Model: LSMICRO128GU3Category: MicroSD Cards
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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.
Pros and cons
- 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 |
|---|---|
| Model | LSMICRO128GU3 |
Frequently asked questions
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.