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I ordered my 128gb SDXC Sandisk ultra UHS-I on Amazon Prime, And i received it pretty fast. I bought it for my Nintendo switch, My console recognize the card as soon as I put it in, Stating ” A system update is required to use the microSDXC memory card.” I updated my console transfer some pictures from the internal memory to the SD card, and it was good to go from there. If you’re looking to buy a great microSD for your switch I highly recommended it’s a great buy don’t miss out.

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.

I got this 128 GIG card to use with my tablets. So far it has worked perfectly in my testing. I always keep a couple of spares around for my future buys and I seem to give a lot of my SD cards away to family and friends. I picked up this 128 GIG at a great price and I just couldn’t pass it up.

I own about 100 SD cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 73.143 MB/Sec and the fastest reading speed was 93.368 MB/Sec. I have attached the graphical test data for your information. I used a USB 3.0 port with a USB 3.0 card reader for the test.

Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.

I hope my review and photo of the test data helps you.

Out of 100 plus SD cards I have purchased from Sandisk I have only had one fail. With Sandisk’s 10 year warranty they replaced it and sent me a new one at no charge. That is the advantage when you purchase high tech from a top company that stands behind their product.

I simply called them and returned the old chip and they sent me a new one.

I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability.

Almost no one needs a 128 GIG chip but at sales prices you can’t pass up getting them.

This is a great product and it makes your smart devices even more powerful.

This is a simple and easy upgrade for your smart devices.

This is a great card. Using it to actually run a disk intensive application as a portable test bed environment. Far, far faster than I expected to be, doing something that it wasn’t necessarily designed for. I had tried other Speed Class 10 cards that were marginal, but this one met the need.

Work as intended. Using this in Note8

Worked great in my Nintendo Switch. At the time of my purchase (which was fairly close to the time of this review), I felt the 64 gig was the best value for the money. But because the prices will likely continue to go down over time and because of the reasons that follow, I probably wouldn’t get a micro sdxc card until you’re running low on the Switch’s internal storage space.

Here are the things to consider…

1. Game saves will always go on the Switch’s internal hard drive. They don’t take up much space, and you can archive saves for games you aren’t currently playing…but for the save files you’re actively using, you need enough room on the internal hard drive.

2. Screenshots and videos will default to the new micro sdxc card, but you can change the default back to the Switch’s internal hard drive in the data management settings. You can also move the files back and forth between the internal drive and the micro sdxc card fairly easily (while the micro sdxc card is in the Switch).

3. Digital download games and updates (even updates for game cards or digitally downloaded games saved on the internal hard drive) will default to the micro sdxc card so long as it is in the Switch. If you want to move your downloaded games and updates over to the internal storage, you will need to archive them (which will remove them from the micro sdxc card), take out the micro sdxc card (turn off* your Switch first), then select the game you want to play (it’ll still be on your home screen menu if you’ve archived it) and the game, updates, and save files will download to the internal storage.

It’s for the third reason, especially, that I recommend using up most of the internal storage before actually using the micro sdxc card. Because the downloaded games and updates are a pain to move around.

Anyway, hope all that helps. It’s a great card. It’s easy to put in. Just turn off* your Switch, put the card in (label facing you as you’re looking at the back of your Switch), and turn the Switch back on. For cards bigger than 32 gigs, you’ll be prompted to install an update, but once that’s done, you’ll be ready to go.

*To turn off the Switch, hold the power button on top of the Switch until you see a menu pop up. choose “Power Options” then choose “Turn Off”.