SanDisk 400GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-400G-GN6MA

This card has not disappointed me yet. With huge amounts of space, and a transfer read speed listed at 100MB/s, it's a card that can serve all kinds of purposes—assuming your device supports this storage amount—for photos, music, videos, and just plain old file storage. I am using mine with the new Sony NW-A45/L Walkman with Hi-Res Audio, Moonlit Blue (2018 Model) , and it has worked marvelously so far, with all the memory being "seen" by the player, and some very good transfer speeds. I have not yet specifically tested the actual speed, but will do so soon with the Black Magic speed tester, and will update this review with that report. Right now (mid-2018) this card is running at just under $200. I don't suspect it will drop anytime soon, since its the only guy on the block, so if you have a use for it, you might as well get it now. I doubt this will even be marked down much towards the end of the year, although I could be wrong, due to its unique status. Having said that, if the price is still too high, keep an eye on it, because there MAY be occasional rebates, two-day sales, etc. It has all the standard SanDisk hallmarks: high quality, nice look, good performance, nice looks, and it, of course, comes with an adapter in case you wish to use this in a camera that takes the standard sized SDXC cards. I can put almost my entire lossless audio library on this one card, which is amazing. Five stars, and an update soon with the results of the speed test I plan to perform.

Not much to say other than to remark on the validity of the SD card I received through Amazon actually being from SanDisk. SanDisk is one of, if not the biggest, SD card manufacturer and the quality of their products is the golden standard. So capacity, performance, and reliability goes without saying for these SD cards. However, I have read quite a lot of reviews claiming that the ones they received were imposters and, while I do not claim they are mistaken or not, I can say that my 400GB one I received from Amazon seems to check out through every test I've run it through. Amazon has quality customer care and product replacement/return policies for the ginormous corporation they are, so if you have any issues with your product I'm sure you can get it worked out within reason. There are a lot of different resources for checking the validity of SD cards online and you can find them all with a simple search on a quality search engine website. If you are concerned, I suggest going that route or contacting local IT support to see what they can do for you. PROS: SanDisk. Enough said. Quality and performance. CONS: Obviously, verrry slim chance of the SD card being a fake. Technology is amazing these days and there are people out there driven to make a quick buck if they've got the materials and the know-how. Even giants like Amazon can fall victim to these numerous and unethical kinds of practices. Happy with my purchase. 100% 400GB SanDisk SD card at a reasonable price.

Works well

I love it! Works great in my Galaxy Note 8! Fast enough that I can throw pretty much anything at it. If you're wondering, modern Android versions (starting with Lollipop, as I recall) have the ability to read up to 1 TB of external storage. While this 400GB card is the maximum capacity you can currently buy*, the leading manufacturers are feverishly working to make larger capacity cards. For now, though, I think 400GB is enough to handle all the 4K video I can shoot. *- Don't be fooled by unscrupulous sellers, particularly on auction sites ( I won't name it because there are a lot of fake cards here, too), who list ridiculously large capacity cards for astonishingly low prices... you don't get what you pay for! They take cheap, generic cards, usually no more than 4 or 8 GB, and rewrite the card's firmware & re-label it to make it act and appear like a larger card... 256GB, 500GB or higher! There are tons of listings out there for 1 TERABYTE microSD cards! Of course there's no such thing: and when the physical memory of the card is reached, your device will simply start overwriting data... and your precious photos, videos and other files will be gone forever. In fact, one third of all SanDisk cards on the market are counterfeit! You can avoid all this by installing and using a free app called SD Insight to determine if your card is legitimate.

エラーもなくカメラ写真やダウンロードした映画や動画、音楽ファイルの保存に役立っています。 まだ使い始めですが、今の所大満足です。

what a bargain got 400gb with a price of 128gb

同じSandisk Ultra Microsdxcの２００GBのマイクロｓｄカードもありますがスマホ装着時の書き込みは圧倒的に遅いです．

Tested the complete card with H2testw tool, 100% passed after some hours. Using it both in my Nintendo switch and switch lite with no issues!

سانديسك افضل شركة في صناعة الذاكرات انصح الجميع بها