SanDiskUltra 64 GB MicroSDXC UHS-I Memory Card with SD Adapter - Standard Packaging

With all the questionable MicroSD cards being produced today, it's important to gather all the information you can.The MicroSD I bought was the SanDisk Ultra MicroSDXC UHS-I with adapter.It states that the speed can reach 80MB/S, but with a caveeat- the write speed is no where near this. Check the disclaimers:[16-128 GB] Up to 80 MB/s read speed; write speed lower.I just ran H2testw 1.4 (latest) to verify my MicroSD, as you should do when you receive any storage cards.The writing speed using a USB 3.0 MicroSD Adapter from KiWiBiRD reached a maximum of 28.5 MByte/s- I was hoping for better.The reading speed using the same adapter reached a maximum of 85.6 MByte/s (Great!)The test finished without errors and filled the full capacity of the card, so I can verify that it at least isn't a re-labelled fake.I contacted SanDisk about determining if my MicroSD card was a fake, and I provided them with some information and a number of photos.An excerpt of their response: "Based on the information that you have provided, it seems that your card is an authentic SanDisk product."Perfect! Totally recommended. Bought a second for a relative.

The media could not be loaded. I'm an IT Professional and I've stored my music, ebooks, pictures and documents in the cloud (like Dropbox, GDrive, One Drive) and It's about 70GB altogether. Cloud-based solutions are great but annoying when you're on the move and can't access a file because of network connectivity issues. Having a copy on an SD card for instant access of all my essential items seemed the logical choice.I've used SanDisk in the past without any issues and they know the criteria for any SD card should be:A) Big enough for your current storage needs and has additional space for expansion as your data grows.B) Fast. A slow SD card will just lead to eventual frustration with unreliable transferring and lag when accessing your files.C) A quality company, if you are spending money on a card, you want to know it's reliable, robust and keeps your data safe. SanDisk doesn't manufacture TV's or PC's. Its core business model is memory. If you want the best that money can buy, stick with the experts.This Sandisk Card, in my opinion, gets tops marks for fulfilling all of these requirements.6 Important Tips and Hints:1) Formatting.It comes formatted in exFAT. Do NOT reformat it. Leave it as it is. I know NTFS is supposed to be faster and allows bigger file sizes, I tried to format mine to NTFS and my new android phone didn't recognise it. I put it back into my PC to reformat it again and bizarrely it wouldn't allow me to. ( perhaps some weird driver issue on my machine) Luckily I have another brand new PC that it did allow me to reformat back to exFAT. Just a heads up to avoid unnecessary drama.2) Creating a Copy Of Your Cloud Files for Offline Use.I was unable to specify where Gdrive, Dropbox and One Drive are stored on my (not rooted) phone. I wanted it to point to my SD card so I could store everything in one place using the files and folders structures I created. None of the Cloud Solutions I use would allow this. As a viable workaround, I've created a manual copy of my Cloud Storage in the SD Card and perform a manual sync every couple of months to ensure I have an up-to-date copy of my cloud items. I suspect the issue is not going to be made any easier as these companies want to lock you into their cloud plans and be your one stop shop solution for the storage of your data.3) Difference between the advertised size and the usable space on the SDcardIn the background an algorithm runs on the card to ensure that wear and tear on the card is evenly spread out to make your card last longer. If an error occurs resulting in a bad sector on the card it swaps out space it's saved for itself and gives it back to you. Both these events occur to ensure that your card remains stable, lasts longer and keeps your data safe, In order for these actions occur the card needs to keep some space on the card for itself in order for this to happen.4) Packaging.If you go for the standard packaging instead of frustration-free ( I always do to check it's legitimate and not a cheap knockoff) make sure you have a pair of scissors or a knife on hand to get the card out. This may seem obvious, but you run the risk of breaking the sd card if you can't wait to try out your card and twist the packaging with your hands to get the card out.5) Transferring Files from Your PC using the Micro SD Adaptor or FTP.To Transfer files from your computer to your tablet or phone you can use the Micro SD adaptor supplied free with the card. In this instance, you must have a MicroSD adaptor slot on your PC or have a USB Micro SD adaptor attached. Alternatively, you can purchase a WIFI / FTP app from the Google Play store to transfer files via WIFI.6) Using this MicroSD card for use on ANY compatible device.Although this MicroSD card (also known as a TF card) is called "Ultra Android" You can use this SD card in Cameras and Mini computers such as the Raspberry Pi and Arduino as well as ANY ANDROID based PHONE or TABLET that has a Micro SD expansion slot. I suspect SanDisk added "Android" in the heading because the most popular usage is for Android Phones and Tablets. Just check on the side of your phone or tablet for a MicroSD Slot. If you're unsure, double check on your product manufacturers website.

A compact but very well made piece of equipment. Image quality is outstanding and the piece of mind this gives in this crash for cash society of ours is well worth it.

I always use SanDisk Memory now as I have found them to be the best consistantly compared to others makes and I think they are one of only three actual manufacturers (I will stand corrected if this is wrong), rather than "rebranders".Regarding speed I have one of the 'older' 128GB 48MB/s cards and this is defintely a welcome improvement - not a massive inprovement, but definitely noticeable on both read/write operations.I tranfer a vast amount of big/small files on and off these and the faster speed is definitely a time saver and worth the money.I use the in my smartphone/tablets and have just bought 3 of these newer one from Amazon, now that the price is MUCH more affordable.I really can't see them getting any cheaper or they will be giving them away, I paid £39 for a 64GB one in August 2013 ! (Now there's a thought).Anyway, overall I think they do their job well and I now look forward to a 256GB version, along with a Smartphone/Tablet that will take them, and I am sure that will happen too !

Brilliant brand that works well. Purchased for Lenovo Yoga Tab 3 Plus - I used it as internal memory so apps etc can be transferred to it. I didn't have much on the SD card only music copied from another device and some of the tablets apps.So when I did a factory reset I left it in and it wiped everything off, which is what i wanted and I was pleasantly surprised that i was able to use the SD card in another device ( this was a worry for me when I used it as internal memory for the tablet as it gives a warning that by doing so that you cannot use the SD card in any other device) I am not a techie person so while others may not be excited by this fact, I was and very happy that I can use the SD card in my phone.

Works great holds loads