SanDisk Ultra 64GB SDXC Memory Card, Up to 120 MB/s, Class 10, UHS-I, V10

Product Information

TOO TIGHT FOR PHONES: The pen drive is a tight fit on mobile phones & tablets - so be careful when pulling it out so as to not damage your phone - because this is also the charging point for your phone. If you feel that your phone is too tight for this pen drive, then it is best not to use it for phone data storage management. SanDisk Ultra is a brand of Western Digital which is the same company that sells external hard-disk storage devices under the brand WD Elements and WD Portable. FIT & FINISH: Being equipped with a retractable mechanism & being too small, the drive is not so smooth to use & slide-in or out in a single shot and needs some getting used to but then most of the OTG drives are designed small and hence have some or the other odd way of conserving size.

My basic intent was to load bulk movies from my laptop into it and watch it over my TV or mobile, However when I was transferring 6 movies of a total size 8.1 GB , it started showing 15 minutes which kept on getting higher & it felt like waiting forever for it to happen. SAME AS OTHERS: For the 64GB pen drive, actual storage space available is 57.2GB. This is normal and not some fraud or fake advertisement. This is because it has FAT32 File System. Also, the device uses some space for its functionality and use. The device comes with the title “SanDisk Ultra - Dual Drive m3.0” and is the newer 2017 version of its previous iteration. Here I need to quote that the term “Ultra” came quite as a surprise to me as I found nothing in lines with a common understanding of Ultra. We will discuss it in detail in upcoming columns of speed. SanDisk Ultra® microSDHC™ and microSDXC™ UHS-I cards are compatible with Android™ smartphones and tablets, Chromebooks, and Windows® laptops. Just insert the card to instantly increase available storage space—at a great value relative to alternatives. New Windows® convertible and ultra-light laptop users, in particular, who were accustomed to the multiple terabytes of storage common on larger laptops will appreciate cards enabling more private physical storage. WARRANTY : The product comes with a 5 year limited warranty which is one of the segment best offers.STORAGE FORMAT: Since the previous FAT32 version had a limitation of file transfer size of a maximum of 4 GB for a single file & NTFS was not compatible with mac OS so with increasing file sizes ex FAT format was devised which doesn’t have a size limitation like FAT yet is compatible with Mac as well. So our drive has only ex FAT & NTFS formats to choose & comes in ex FAT by default with 128 KB file allocation size. Increasing the file allocation size may increase the transfer speeds a little but will affect the storage capacity little too. Changing it from 128 to 256 KB increased my write speeds from 13 MB/s to 15 MB/s if that’s a relief to anyone. CONSTRUCTION: The device has a plastic body & the overall construction of the drive is just average. The retractable plastic column seems to the weakest link of all and would surely break if you accidentally step over it. However the actual drive storage portion is built of a rigid plastic and won’t give up so easily. Both the USB ports are built of metal which again is quite a relief.

FILE SYSTEM FORMATTING THE PEN DRIVE: Unless you are sure you won't use your pen drive on a particular device, don't format the pen drive to change its FAT32 File System. SPEED: The Speed is extremely good for Windows OS laptop, Linux OS laptop and Android Mobile Phones.if like most people you will be using this pen drive on laptops or other devices of friends or co-workers, then leave the existing FAT32 File System as it is. STORAGE SPACE: Just as in external hard-disk drives, the actual usable storage space will be less than what is mentioned on the product. Even for a single movie of 1.8 GB it took 2 minutes 30 sec by stopwatch to transfer. The write speeds started with 13 MB/sec and went down & down to 10-11 MB/sec. Even with my older Kingston DT elite 3.0 16GB,the write speeds were in excess of 21 MB/Sec.

Approximations: Results and Full HD (1920x1080) video support may vary based on host device, file attributes, and other factors.I had never expected it to be this slow in this modern era of 2018, thus finally I decided to return it but I suppose I will only get a replacement & not reversal.