Amazon Basics

Amazon Basics Micro SDXC Memory Card with Full Size Adapter A2 U3 Read Speed up to 100 MB

51+ bought in the past month

$14.39$38.98

About this item

  • Compatible with smartphones, tablets, cameras, GoPro/action cameras, laptops, computers, DSLRs, drones, game consoles and more.This Micro SD card is not compatible with Nintendo Switch 2
  • HIGH QUALITY STORAGE: Perfect for high resolution photos, for recording and storing Full HD/4K videos and any other data type
  • ULTRA FAST: Read speed up to 100MB/s. Write speed up to 60MB/s (varies according to memory size). UHS, U3, Class 10 and A2 speed classes for an optimal smartphone experience
  • LASTING RELIABILITY: Shockproof, IPX6 waterproof, temperature-proof (-10° to 80°), X-Ray-proof and magnetic-proof
  • Note: Actual storage capacity shown by a device's OS may be less than the capacity indicated on the product label due to different measurement standards. The available storage capacity is higher than 116GB.
  • Read and write speeds are based on internal tests conducted under controlled conditions. Actual speeds may vary depending on device used, interface, conditions of use, and other factors
  • Note: Please note that we are changing the product's printing and packaging; both 2 versions are the same. (Old version does not show the A2 logo, but its performance is A2 level.)
  • Note: Check whether your device is compatible with the MicroSD capacity, for example, if the device only supports a maximum capacity of 64GB, it may not recognize 128GB MicroSDs above
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Product details

BrandAmazon Basics
Model NameLSMICRO128GU3
Flash Memory TypeMicro SDXC
Memory Storage Capacity128 GB
Compatible DevicesCamera, Drone, Laptop, Smartphone, Tablet

Technical specifications

colorBlack
special_featureMagnetic Proof
read_speed100 Megabytes Per Second
item_weight8.02 Grams
warranty_typeLimited
write_speed60 MB per second
hardware_interfacemicroSDXC
secure_digital_association_speed_classClass 10
product_dimensions1.69"L x 0.3"W
manufacturerAmazon
upc840095874021
ram128 GB
best_sellers_rank#8 in Our Brands ( See Top 100 in Our Brands ) #1 in Micro SD Memory Cards

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Customer reviews

4.7138,334 ratings

Customers say

Customers find the memory card works well in various devices, including Nintendo Switch and Wyze cam, with fast write/read speeds and reliable performance.

★★★★★

Perfect Upgrade for a Fire Tablet – Works Flawlessly!

Elissa EatonJanuary 1, 2026

I bought this Amazon Basics 256GB Micro SDXC card for my daughter’s Fire tablet, and it has been a fantastic upgrade. It was recognized instantly, installed without any issues, and provided plenty of extra storage for apps, games, movies, and offline content. The performance has been excellent — apps load quickly, videos play smoothly, and there’s no lag at all. The A2 and U3 ratings really make a difference, especially for a kid’s tablet that gets used heavily every day. The included full-size adapter is a nice bonus, making it easy to transfer files from a computer if needed. For the price, the quality and reliability are outstanding. If you need extra storage for a Fire tablet or any device that supports microSD, this card is a great value and I would absolutely buy it again. Highly recommended! Read more

★★★★★

💾 Amazon Basics 512GB Micro SD Card: Perfect for the Drone!

Rk MagillDecember 5, 2025

This card was perfect when it showed up on time! Not much else to say—this was a good value for the dollar and works great in my drone! It's a solid, high-capacity card that is rated A2 and U3 with read speeds up to 100 MB/s. The inclusion of the Full Size Adapter is also very handy. For the price, you get reliable speed and massive storage capacity needed for 4K drone footage. Highly recommended! Read more

★★★★★

“Fast and Reliable Micro SDXC Card for Everyday Use”

LorenaNovember 27, 2025

The Amazon Basics 128GB Micro SDXC card is an excellent choice for anyone who needs fast and dependable storage. With A2 and U3 ratings, it handles apps, 4K video recording, and high-speed data transfers with no issues. The read speed of up to 100 MB/s makes loading files quick and smooth. I also appreciate that it includes a full-size SD adapter, making it compatible with cameras, laptops, and other devices. For the price, the performance and reliability are outstanding. A great budget-friendly option that delivers exactly what it promises. Read more

★★★★★

Super cheep and good quality

eli markDecember 24, 2025

Super affordable, way cheaper than all the other name brand SD cards, basically gives me unlimited pictures with such a big amount of memory for such a low cost, connects very easily, and does the job as expected Read more

★★★★☆

Came quick. Perform well.

Johnnie PetersDecember 24, 2025

So far so good. I use them in ANBERNIC Devices decent quality, not sure of longevity. Read more

★★★★★

More affordable than the big names and more reliable than the no-names

CJOctober 17, 2025

I got a retro handheld a few months ago and needed an microSD card to put the games on. The device shipped with a card, but it was total JUNK, to the point that most of the games wouldn't even run off of it. After reading that this was a common issue, of the bottom-of-the-barrel cards the handheld shipped with having high rates of failure, I followed the advice of getting a new card to use instead. The recommendations I got were to buy a name-brand, and I was going to do that. But even after seeing the prices of those cards on sale on Prime Day, this Amazon brand was still priced better. I've had pretty good luck with AmazonBasics as a brand for tech and since playing some video games isn't something super mission critical in my life, I decided to give it a try. Works great! Easy to use, reliable - haven't had any issues. Night and day versus a cheap, no-name card. If you're a pro photographer or something, maybe you want to go super high-end for peace of mind. But in my narrow and casual experience, this was the perfect purchase for me. Saved me a good amount of money and works perfectly for what I needed it for. If you're looking for something to load your retro games onto for an emulation handheld, I'd recommend this drive and include it in the "reliable brand names" category. I want to get a couple more, one to replace the old, junky, off-brand card in my phone and another for my laptop. Between the price and perfomance, so far these cards are a winner for me.. Read more

★★★★★

impressed with their consistent performance

Customer ReviewJune 30, 2025

Why did you pick this product vs others?: After using the Amazon Basics 64GB MicroSDXC cards for my GoPro Hero 9 over the past three months, I've been thoroughly impressed with their consistent performance. The two-pack arrived in simple but secure packaging, and each card came with a full-size adapter that's proven handy when transferring files to my laptop. What first caught my attention was the A2 and U3 ratings, which promised fast app performance and 4K video capability - specs that initially made me skeptical given the affordable price. Recording 4K footage at 60fps has become my standard practice with these cards, and they've handled it without a single dropped frame or overheating warning. I regularly shoot hour-long sessions while snorkeling, and the cards maintain steady write speeds even when the camera gets warm in direct sunlight. The claimed 100MB/s read speed feels accurate when I'm transferring files to my computer - a 30GB dive session transfers in about 5 minutes, which is significantly faster than the generic cards I used previously. Memory quality: What surprised me most was how well these cards perform with the GoPro's advanced features. Timewarp videos, 240fps slow motion, and HERO mode photos all save instantly without any lag or buffering. I've filled these cards completely multiple times during road trips, and they've never corrupted files or failed to save important moments, which happened occasionally with my old cards. The included adapters work perfectly in my DSLR too, making them versatile for all my photography needs. Durability has been excellent despite heavy use in various environments. After being submerged in saltwater, exposed to desert heat, and frozen during winter hikes (accidentally left in my jacket pocket), both cards still function flawlessly. The black finish shows no signs of wear, and the locking mechanism on the adapters remains firm after dozens of swaps between devices. I appreciate that they maintain consistent performance even when nearly full - some cards slow down significantly when storage space gets low. Reliability: For the price of this two-pack, the value is outstanding. I've tested these side-by-side with name brand cards that cost twice as much, and the Amazon Basics cards match them in real-world performance. Having two identical cards means I always have a backup ready when one is transferring files, and the peace of mind knowing both are reliable is worth the purchase alone. They've become my default recommendation for fellow action camera enthusiasts. After recording over 500GB of footage across multiple adventures, I can confidently say these microSD cards outperform their price point. The combination of speed, reliability, and included adapters makes them ideal for anyone needing dependable storage for 4K video. They've handled everything from professional shoots to family vacations without fail, proving you don't need to spend a fortune for quality memory cards that keep up with demanding cameras. Read more

★★★★★

Superb SD Card

LeviDecember 30, 2025

This SD card is fantastic! Worked great for modding my 3DS and was relatively cheap which upped the value even more! Most budget friendly SD card on the market as of now. Read more

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