Karta na 128GB ma ponad 60GB uszkodzonej pamięci. Rzeczywiste prędkości to: Writing speed: 16.0 MByte/s; Reading speed: 3.58 MByte/s(!)Poniżej wynik testu:The media is likely to be defective.58.5 GByte OK (122762479 sectors)60.5 GByte DATA LOST (127081233 sectors)Details:20.8 MByte overwritten (42768 sectors)0 KByte slightly changed (less 8 bit/sector, 0 sectors)60.5 GByte corrupted (127038465 sectors)20.8 MByte aliased memory (42768 sectors)First error at offset: 0x0000000116a3c000Expected: 0x0000000116a3c000Found: 0x0000000116a3c200H2testw version 1.3Writing speed: 16.0 MByte/sReading speed: 3.58 MByte/sH2testw v1.4Nie kupujcie tego szajsu.

Bought three, one failed. Cheap POS. Worth it.

Initially bought two card. One worked great without issue, other went bad within one week. Won't read in multiple devices, won't format. Returned it for a full refund from Walmart. Purchased a third since so cheap, and it's working fine so far for a week. Will update if it goes bad. Overall, for the price and headache, give it three stars.

Faulty product, excellent seller

I received the item, and it appears to be a legitimate, brand-new SanDisk SD card (the packaging is identical to their usual products). I tested the item from day one after receiving it, but, after three reformats with different file systems and done with different devices, I couldn't get this SD card to work.However, the seller was excellent. They honored a completely frictionless refund, and were very responsive to my inquiries. This rating is more for the seller than the product, which I'm mixed on recommending.On the one hand, I understand that electronics do occasionally fail, so maybe I got a lemon. On the other hand, this price feels too good to be true. I got mine (a 512 GB SD card) for about $40, and, as of this writing, it's available for less than ... MoreI received the item, and it appears to be a legitimate, brand-new SanDisk SD card (the packaging is identical to their usual products). I tested the item from day one after receiving it, but, after three reformats with different file systems and done with different devices, I couldn't get this SD card to work.However, the seller was excellent. They honored a completely frictionless refund, and were very responsive to my inquiries. This rating is more for the seller than the product, which I'm mixed on recommending.On the one hand, I understand that electronics do occasionally fail, so maybe I got a lemon. On the other hand, this price feels too good to be true. I got mine (a 512 GB SD card) for about $40, and, as of this writing, it's available for less than $30. That's less than half of what you'd pay anywhere else, even online (Black Friday deals and similar aside). I guess buy at your own risk, but at least, if you go with this seller, they'll take care of you if you do have problems.

Horrible Product

I'm using this for personal files on a microsoft surface pro. I've tried transfering files from my old computer 3 times to the micro SD, reformatted and started over twice. When checking disk space as a whole, it indicates all files transferred, however, when going down into the files, some files are always missing. Summing the files within is never even close to the total SD card space consumed. It's as if it's writing the file but it's hidden for some reason and I can't see it??? Trying to delete, once unsuccessfully transferred, doesn't work...the "visible files" delete but the only way to get rid of the folder or restore the disk space at the root level of the SD card is to reformat. Disappointing.

It's a SanDisk

What can I say, it's a SanDisk! Excellent packaging, excellent product!! Took it out of the package, slid the micro card into the SD adapter, inserted it into my Canon t3i, formatted it, and was off and shooting!!! Nice quality all the way.

SanDisk a name that shouts quality with very high standards

SanDisk has always produced five star products, with very high quality and a company you can rely on to keep there high standards of manufacture and the 128 GB micro SD card is no exception with everything you need to be able to transfer valuable information from one Card to another without the slightest chance of loosing any part of the transfer. Easy to pick up and ready for use a simple reboot and everything running as normal new location found no blemishes what so ever. Used many SanDisk components over the years of IT and never had problem with anything what so ever.

Sandisk ultra 512 micro SD card.

The sandisk ultra 512 GB micro SD card works great in the kids tablets, giving them lot of storage for all their apps and pictures. Also a great price for the capacity of the card. We only just got these for the kids for Christmas so time will tell on how good they actually are. So far we are very happy with them.

Updating review and given 5 stars

UPDATING MY REVIEW, to be fair I made my homework and I find out that my dash cam DO NOT support 128GB Micro SD card. So that conclude my suspicion and also updating my rating from 4 to 5 stars. I'll available my first review just to let other people know that we have to waste al the possibilities and get more information before to make a review. NO VALID REVIEW: Overall is OK, Don't know why I have some issues when I use it in my dash cam apparently is a slow card but the seller say it's a class 10 card. I try several times to use it in my Dash Cam [Model Crosstour GPS Dash Cam] but this device do not recognize it only give a message as "broken or slow Card, try to use a class 10 card or above". But when I use a 64 GB Card have no problem that's why I'm not sure if ... MoreUPDATING MY REVIEW, to be fair I made my homework and I find out that my dash cam DO NOT support 128GB Micro SD card. So that conclude my suspicion and also updating my rating from 4 to 5 stars. I'll available my first review just to let other people know that we have to waste al the possibilities and get more information before to make a review. NO VALID REVIEW: Overall is OK, Don't know why I have some issues when I use it in my dash cam apparently is a slow card but the seller say it's a class 10 card. I try several times to use it in my Dash Cam [Model Crosstour GPS Dash Cam] but this device do not recognize it only give a message as "broken or slow Card, try to use a class 10 card or above". But when I use a 64 GB Card have no problem that's why I'm not sure if this is a class 10 card. I have to mention that in my cell phone [Samsung Galaxy Note 8] or in my laptop computer through the adapter card woks apparently OK.

Works as intended for most tasks

I am giving this memory card a 3 star review. It DOES work.However I might be an edge case as I was getting this memory card to write a raspberry pi image to using the official raspberry pi imager tool.It took 2.5 days to write the image to the card and then 3.5 days to verify the data that was written and then failed at the end of the verify stating that the data on the card did not match the data that was written to the card.The raspberry pi would not boot. It stated that there was a microsd card detected but could not read the file system.I’ve written hundreds of raspberry pi images to other microsd cards and have never gotten this issue.Formatting the card on a Mac and pc worked fine however, so I believe it would be a fine memory card for most tasks ... MoreI am giving this memory card a 3 star review. It DOES work.However I might be an edge case as I was getting this memory card to write a raspberry pi image to using the official raspberry pi imager tool.It took 2.5 days to write the image to the card and then 3.5 days to verify the data that was written and then failed at the end of the verify stating that the data on the card did not match the data that was written to the card.The raspberry pi would not boot. It stated that there was a microsd card detected but could not read the file system.I’ve written hundreds of raspberry pi images to other microsd cards and have never gotten this issue.Formatting the card on a Mac and pc worked fine however, so I believe it would be a fine memory card for most tasks such as for expanding memory on a mobile device, gaming system or camera.

Worth purchasing

It's a good deal and a great product. It's reliable and just what I needed for my new phone and tablet to store and transfer files between them and my desktop. It's great for storage and I can hardly believe something so small could have so much power. Not so long ago, I spent more than $200 for a 150 gig external hard drive to store data in and it's about the size of an old cassette tape deck. Now, for such a small price, I have a memory card that's about the size of a pinky nail that can store close to that amount in data and an adapter that makes it easier to use in some my other electronics. Amazing! It says it is 128 gigs but my phone recorded 134 gigs. It was definitely worth purchasing.