SanDisk128GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 190MB/s, C10, U3, V30, 4K, 5K, A2, Micro SD Card - SDSQXAA-128G-GN6MA

I am a big fan of SanDisk. They are my "go to" brand when purchasing flash memory devices. When I first started purchasing flash memory devices I tried a variety of brands. I learned the hard way that some less expensive devices just didn't last, lost data, or did not always read like they should. Once I purchased SanDisk products I just didn't have problems with them. I have purchased SanDisk SD cards, micro SD cards, and thumb drives. My experiences have all been positive. I still have some from several years back that continue to function well. Most important to me is that I find that they are at a nice price point and, as mentioned, work well over time. I use their micro SD cards for my phones (those that still accept them), my security cameras, and my dash cams. I use this specific series, "Extreme" for dash cams. I use the "Ultra" series for my phones and security cameras. My apologies but I am not an expert at doing bench tests on these products. My only experience is actual use. So my gauge of quality is, "Do they work when I need them to?" Unfortunately, the only measure of this is when they go bad, which does not seem to happen with how I use them. As mentioned, I just don't have the issues I had when I purchased lower priced (quality?) devices. I am sure there are some much more knowledgeable reviewers who can report on transfer speed. It would be great to see some of these reports because I have been wondering lately if some of the "higher end" series of micro SD cards are worth the extra price.When I was looking for dash cam micro SD cards, I did a little research and found several reviews that included the SanDisk "Extreme" so I did step up and paid the extra for the "Extreme" series.I also know that I have never had any issues with formatting a SanDisk card.Most of the micro SD cards I order come with an SD card reader. That is nice even though I now have several. That said, I saw that SanDisk also makes a "USB-A" micro SD card reader. The micro SD card loads from the end rather than the side like many of the card readers. I may end up trying one of those at some point. Or, wait to see if they come out with a "USB-C" version.Recommend: YESQuestions: Just wondering if there is really that much difference between the various "series" that SanDisk has for their micro SD cards.

This card is everything I needed and more. I’ve tested it thoroughly in both my Steam Deck and Nintendo Switch, and it performs perfectly—no lag, no crashes, no issues with read/write speeds. Games load fast, updates install quickly, and large files transfer without any hiccups.The 2TB capacity is an absolute game-changer for anyone running a big emulation library or downloading tons of games digitally. I’ve filled this with hundreds of gigabytes worth of games, videos, and apps, and it hasn’t skipped a beat. It’s rated up to 240MB/s, and it holds up well even under heavy use.I also appreciate that it comes with an SD adapter for easy use in laptops and card readers. I’ve used it for 4K video capture too, and it hasn’t dropped a single frame. It's V30 and A2 rated, which means it's optimized for both video recording and fast app performance.Highly recommend this to anyone looking for high-capacity, high-speed, reliable storage—especially for gaming handhelds like the Steam Deck or Switch. I’ll definitely be buying another one in the future.

I have been buy SanDisk for years and they never disappoint. All of their SD cards and USB drives have a great longevity and are always as fast as advertised. I always by the faster versions in the type I need for best performance. These work great in N SW1, Samsung phones and tablets (and probably other brands), Raspberry Pi, and anything else that needs a micro SD card.

Finally managed to set this Micro SDXC card as internal storage using ADB on my sis' pc since it isn't an option on my TCL A3 phone. Typing the commands for first time made me feel like a real hacker😊. Gotta say I'm loving the extra 128 GB to use on my Android phone, it's so handy. I am still suspicious as to if it might bug my phone out and destroy it tho. Still smooth sailing so far.

I am extremely happy with the functionality of this microSD card. The quality is fine, is easy to use, and I think it was priced well. It’s working great with my switch oled.

I bought this to enable me to store movies to view on my Kindle Fire Max 11 without depleting the built in memory. It was well packaged in bubble wrap so damage was as good as alleviated during prep and transportation. My kindle recognised it straight away. I'd read in some other ratings that its best to set as portable storage, so I did the same even though I don't intend to remove it. I've used Sandisk products before without problems and so far this has not shown any either with readability and reliability. I've had it installed for less than a month only. Its giving 5 star performance. but can only give it 4 stars for now because it needs to maintain that for a lot longer than the couple of weeks I've been using it.

For additional storage for phones and tablets, I always rely on SanDisk products to fit the bill. I have owned several (of differing sizes) over the years and have been consistently please with their performance.

Functions as it should, fits a micro sd slot well, easy to format, and not a bad amount of memory for the price. I use this in my insta360 camera, and have had no problems with it. Functions as it should.