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The Amazon Basics 256GB microSDXC card delivers up to 100MB/s read speeds with A2 and U3 certifications, ensuring smooth 4K UHD video recording and fast app performance. Built tough with shock, water, temperature, magnetic, and X-ray resistance, it’s perfect for professionals and adventurers alike. Includes a full-size adapter for versatile use across cameras, smartphones, drones, and tablets.





| ASIN | B08TJZDJ4D |
| Additional Features | Magnetic Proof |
| Best Sellers Rank | #13 in Our Brands ( See Top 100 in Our Brands ) #1 in Micro SD Memory Cards |
| Brand | Amazon Basics |
| Color | Black |
| Compatible Devices | Camera, Smartphone, Tablet |
| Customer Reviews | 4.7 4.7 out of 5 stars (146,109) |
| Flash Memory Type | Micro SDXC |
| Hardware Connectivity | microSDXC |
| Item Dimensions D x W x H | 0.04"D x 0.59"W x 0.43"H |
| Item Dimensions L x W | 0.43"L x 0.59"W |
| Manufacturer | Amazon |
| Media Speed | 90 MB per second |
| Memory Storage Capacity | 256 GB |
| Model Name | Amazon Basics - MicroSDXC, 512 GB |
| Model Number | LSMICRO256GU3 |
| Read Speed | 100 Megabytes Per Second |
| Secure Digital Association Speed Class | Class 10 |
| UPC | 840095874038 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |
S**E
Solid storage card with adapter included
Works great for cameras, handheld devices, and expanding storage. The included full-size adapter is convenient, and performance has been reliable for transferring files and general use. Good value for a name-brand basics card.
W**S
Quality memory card for a better price than the name brand. Pleased with the purchase.
I usually buy another brand of memory cards for the various devices. Decided to order some of these Amazon branded memory cards. They work as well as other cards I have bought, the size of the card can be bought according to your needs. Easy to format and read/write to. Not sure of the speed but have had no problem recording HD and 4K video to these cards with no problem in video/audio quality. The car itself seems well made with nice printing and good finish. So far I am pleased with these Amazon branded memory cards. Working as I anticipated.
J**M
Miles of Memory in a Small Red Field
I’ve come to admire small, dependable things—the sort that quietly do their work without fuss—and this Amazon Basics 128 GB microSD memory card is very much that kind of companion. It’s a modest little square of technology, but it holds an impressive amount of room for photos, videos, and files, like a field that stretches farther than you first expect when you step out onto it. Installation was simple and quick, and the included full-size adapter makes it easy to use across different devices. I’ve used it in a camera and a tablet, and in both cases it performed steadily, storing and retrieving files without hesitation. Transfers are smooth, and it’s reassuring to know that such a small card can keep so much safely tucked away. There’s something satisfying about reliability like this—no drama, no complication, just quiet usefulness. For everyday storage and dependable performance, this memory card walks a good road and keeps its promise the whole way. Five stars without question.
K**H
Surprisingly great performance at an unbeatable price — top value microSD!
Excellent value for a 256GB microSD card — I honestly was not expecting this level of performance at this price point. The Amazon Basics branding had me a little skeptical at first, but after putting it through its paces, I am genuinely impressed. Speed & Performance: The card delivers on its A2 and U3 ratings. Read speeds are consistently near the advertised 100 MB/s, which makes file transfers fast and smooth. I use it in my dashcam and security camera and have experienced zero dropped frames or buffering issues. The A2 application performance rating also means it handles app loading and random read/write tasks reliably. Storage & Reliability: 256GB is plenty of space for extended video recording, photos, and app storage. I have been using it daily for several months with no data loss, corruption, or errors. It gets warm but never hot, even during continuous 4K recording sessions. Compatibility: It comes with a full-size SD adapter which is a nice touch — useful for transferring files to a laptop or camera. Compatible with a wide range of devices including smartphones, tablets, dashcams, drones, and action cameras. Value for Money: This is where the card truly shines. Compared to branded alternatives like SanDisk or Samsung at the same capacity, this card offers comparable real-world performance at a significantly lower price. For everyday use cases like dashcams, security cameras, or extra phone storage, there is simply no need to pay a premium. Highly recommend this card for anyone looking for a reliable, fast, and affordable storage solution.
J**I
Reliable SDXC card with good read/write speed
This microSDXC memory card works reliably. I'm using it for my Car's dash cam, and so far its quality is decent. I've used others and their quality is little bit better than this one, hence giving 4 star. For storage capacity wise, it's good enough for my daily usage. The card delivers good read/write speed. Totally worth the money.
A**H
Sd card
I grabbed the Amazon Basics Micro SDXC Memory Card with Full-Size Adapter because running out of space is a universal problem and I’m not about that life. This memory card checks all the boxes without drama. Let’s break it down: the capacity is generous, so you can stash tons of photos, videos, music, apps, whatever you need without that dreaded “Storage Full” alert popping up every five minutes. The micro SDXC format means it slides right into phones, tablets, cameras, and drones — basically anything that takes a micro SD card — and the full-size adapter means you can use it in laptops or card readers too. That’s convenience you actually use. Performance is reliable. Transfers feel reasonably speedy given the format, and opening or saving files doesn’t make you wait like you’re watching paint dry. I didn’t get weird errors, slowdowns, or mysteriously disappearing data, which, yes, feels like a luxury when it comes to flash storage. Build quality is exactly what you’d expect from Amazon Basics — sturdy, unpretentious, and dependable. No gimmicks, no fancy branding, just storage that does its job. Overall, this micro SD card is practical, versatile, and dependable. If you need extra storage that won’t flake out on you, this is a strong choice and absolutely earns five stars.
H**E
bought for kids amazon tablet! works great!
Worked great for the kids tablet! Inserted it and then went into settings (under my profile not the kids profile) to format it to the tablet. worked great and quick too! Switched back to the kids profile and now we can download more apps and such instead of the regular few it would hold from factory. It was easy to set up and works great to hold storage of pictures, videos, apps and more!
Y**A
Perfect for security cameras
Title: Perfect for security cameras ⭐⭐⭐⭐⭐ I bought this microSD card to use in my security cameras, and it has been working perfectly. I’ve been using it for continuous recording and haven’t had any issues. The speed is good and it stores the videos without interruptions. It feels reliable and the installation was very easy. For the price, it’s definitely worth it if you need a memory card for security cameras or other devices. I highly recommend it.
G**B
Ok
M**I
Chegou em otimas condições, não tive como testar muito mas consegui saber que funciona.
S**I
Been using it for 2 months now, have not faced any issue, looks good, nice quality, have not faced any data loss, supports most android phones that can support high memory.
J**N
Bonjour achat avec dashcam
L**S
Good value, better then all my sandisks!
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