Integral UltimaPro 16 GB MicroSDHC Class 10 Memory Card up to 40 MB/s, U1 Rating - Black

Considering that I ordered the sd card in the evening, Amazon lived up to its hard won reputation for delivery which in my opinion sets new standards for others to follow.Unfortunately when put into the kindle fire 8 (yes, it was switched off) a message appeared on my screen telling me that my kindle incompatible. There was another message telling me to insert it so it could be formatted, this was, and still is, a pain in the neck becsuse it was an Amazon choice and reccommended by them. It should be ready to use. Two days later and my kindle is now really slow in loading and almost impossible to watch. I shouldn't have to sync my device appx 9 times a day and three or more times watching prime tv. As for Amazon music, my monthly subscription was paid today. I can't even get it to load music. I took the card out and another message popped up telling me that my apps, photos, videos files would be lost.

I bought one of these for my son's kindle fire. It worked OK for a couple of months and then completely failed. I then got a replacement, since then the kindle has had loads of issues and will no longer recognise the memory card. Removed the card and hey presto - the kindle is working fine again. Once again though my son can not access his games. Even more annoying, I have apparently had it too long to request a refund or replacement - only 6 months. Complete waste of money. Avoid avoid avoid.

Well although I was a bit annoyed that the card stopped working at two years old I later realised it came with a 5 year guarantee. I posted it off second class on a Friday and got a replacement Wednesday before lunch. The replacement seems to be a better card and comes up as manufactured by Panasonic using the SD Insight App and had read/write speeds of 35 and 15MB/s using the A1 SD Bench App. Delighted with customer support. Shame all aren't this good.Worked well for two years. Then I started to get errors. Now it's not working and just before I go on holiday with no time to get a replacement.Original reviewOrdered on Friday and arrived Tuesday from Switzerland (not Jersey). I have quickly tested the card using h2testw.exe. The card was tested using a USB 3.0 card reader but in a USB 2.0 port which may have slowed down read/write speeds. Anyway here are my results which look encouraging. I must add that due to the high number of fake cards I think it's good for ALL cards to be tested prior to use when data could be at risk.RESULTSWarning: Only 61214 of 61215 MByteTest finished without errors.You can now delete the test files *.h2w or verify them again.Writing speed: 17.9 MByte/sReading speed: 26.2 MByte/sH2testw v1.4

I was a little anxious about buying this card as I was worried if it would work in my phone. I can confirm it DOES WORK IN SAMSUNG S8. It was a little fiddly to fit in but now I can back up my photos to the card and transfer to laptop or visa versa . It comes with an adaptor to insert into computers. Excellent for the price with a large capacity for photos or videos

Breaks after 2 months in my Kids Kindle, just stops working and then I find you cannot even return it, not method to complain so all I can advise is do not make my mistake and buy this poor quality product. It will just suddenly stop working, you will spend hours trying to verify it is not the kindle but the card that is at fault, come on here to return it and find my return window expired 2 days ago - pretty certain they need to warranty for a year but how do you complain to faceless giant?

Having been stung a couple of times recently buying cheap memory, the first thing I did on receipt of this card was to run a memory check. I am pleased to say that it is indeed a 64GB card, and not hacked memory.However, as another reviewer has pointed out, this does not have a 10MB/s writing speed. My test gave me an 8.5MB/s. Not what was advertised. For me this is not a problem, as I am only using it in a tablet computer, and do not need to record HD video onto it. So the write speed is adequate for my purposes. Furthermore, at just over £17 for 64GB (lightning deal) I am more than happy with the value for money.I am not sure that there is much more to add to this other than it was well packaged and comes with an adaptor.I will of course update this review if I experience any issues with it in the future.

These little cards seem to be quite reliable and I have two of them in my tablet and smartphone holding lots of music, pictures and documents. Before this I bought six of some much cheaper 32gb for the same cost of these two cards thinking I was getting a great deal but within a month five of them had failed. No matter how much I tried to repair them using so many different recovery apps so now they are living in the bin. These UltimaPro are used on daily basis and so far have been reliable enough showing that sometimes cheaper isn't always the best deal.