Amazon Basics 128GB microSDXC A2 U3 (with SD Adapter)

Amazon Basics 128GB microSDXC with a full-size adapter is a high-performance memory card built for 4K video, fast app response, and rugged mobile use.

This microSDXC card pairs A2 application performance and UHS-I U3 speed ratings to handle demanding mobile tasks and high-bitrate video recording. Supplied with a full-size SD adapter, it fits cameras, laptops, and game consoles that accept standard SD cards. The card is engineered for outdoor and travel use with protections against water, shocks, and temperature extremes, while advertised read speeds reach up to 100 MB/s in lab conditions.

Will this microSDXC work in my Nintendo Switch?

Yes — the card is compatible with the original Nintendo Switch model, but not with Nintendo Switch 2. Always confirm your device’s maximum supported card capacity before purchase to ensure full compatibility.

• Compatible with Nintendo Switch (original), not Nintendo Switch 2.
• 128GB labeled capacity yields approximately 116GB usable after formatting.
• Includes full-size SD adapter for systems requiring a standard SD card.

How fast and responsive is this card for apps and 4K video?

This card carries UHS-I U3 and Application Performance Class A2 certifications, so it’s designed for smooth 4K playback and quicker app loading on supported devices. Read speeds are listed up to 100 MB/s (lab-tested); real-world performance can vary by host device and file types.

• U3 and V30 ratings suitable for high-bitrate 4K recording and consistent playback.
• A2 class helps reduce app launch times and improves multitasking on Android devices.
• Lab-tested up to 100 MB/s read speed; write speeds depend on device and workload.

How durable is this card for travel, outdoor shoots, or dashcams?

The card is built with multiple protections to endure common travel and outdoor conditions. It resists water spray, survives shocks, and tolerates a wide temperature range, making it practical for action cameras, road cameras, and field photography.

• IPX6 water-resistant rating shields against heavy splashes and rain.
• Shock-resistant design for drops and vibration-prone use like action cameras or dashcams.
• Operates across extreme temperatures from −10°C to +80°C and resists X-rays and magnetic fields.

What storage capacity can I expect versus the labeled size?

Labeled capacities are measured differently than what operating systems report, so usable space is lower than the card’s nominal size. For a 128GB card, expect roughly 116GB of usable storage after formatting, sufficient for many hours of Full HD video or dozens of 4K clips depending on bitrate.

• 128GB labeled capacity ≈ 116GB usable after formatting.
• Capacity examples: 64GB ≈ 58GB usable; 256GB ≈ 232GB usable.
• Actual file counts and recording time depend on resolution and bitrate settings.

Who is this for: Photographers, videographers, mobile gamers, and everyday users who need a rugged, versatile microSDXC card that balances fast read speeds with app responsiveness. It’s a practical choice when you want reliable storage for 4K video, faster app performance on Android devices, and the flexibility to use the card in devices that require a full-size SD card via the included adapter.