SanDisk 64GB Ultra Dual Drive m3.0, microUSB and USB Type-A, High-speed USB 3.0,, Retractable design for Android Devices and Computers - SDDD3-064G-G46, Black

Works great

This little flash drive is perfect for taking storage on the go. I have a Pixel 3 XL that came with a USB A to USB C adapter, & my laptop & tablet have USB A & Micro USB connections. This is perfect for transferring data, school work, music & just about any other digital goods between them. I would definitely recommend this. It shipped & came packaged well and is the device advertised with the size I wanted. I bought the 64GB size and am glad I did. The only hindrance with these drive types is the file transfer size limitations about 4 GB or less per file. When you format the drive for windows you can select NTSF, FaT32, eXFat, ect. However, when you format for Android tablets or phones, ( i assume iOS as well) you only have one compatible format type that limits your file size. You'll have to google which will allow you to transfer the larger file sizes. I burn some of my DVDs to an external hard drive & like to take some on the go if I know I'll have some time to kill. But the file sizes can get larger, about the 5 to 8 GB size, and this device won't take those larger sizes as I transfer them to my tablet to watch. But if you only use Windows computers, or laptops then it shouldn't be a problem.As for people's opinions on speed, ie. read & write speeds, they really don't matter when you compare the different drives like this. They mostly depend on the device being used & if that has the ability to transfer quickly.I like the simplicity of this "slide" that protects the two port ends. The last one that I bought (different style) had a similar plastic cover that protected the connection ports, but just a few weeks into using it the other drive's shell broke & left me with just the internal ports exposed, eventually the micro port broke. That's why I bought another, I hope that this outer shell lasts longer than the other one did. I expect this should last me quite a few years, like the other did, I just hope it retains its outer shell.

I bought this little drive after several other attempts at backing up my photos using an Android tablet for a trip I was taking. The tablet didn't have a lot of storage space or memory, so I wanted to back up the pictures to somewhere else. One can also drop, lose or have one's camera stolen while on a trip too. I was unable to get the tablet to recognize several different flash drives I purchased. Then I bought a portable hard drive that also wasn't acknowledged. Then I read about this little SanDisk device. After downloading the SanDisk Memory Zone app onto the tablet, the SanDisk flash drive was immediately recognized and opens up a system where your entire tablet contents can be transferred around inside the tablet, or to the SanDisk flash drive itself. It made copying or moving files pretty easy. It hung up on several occasions but I am blaming that on my primitive tablet and the huge amount of material I was attempting to move all in one large file. I also had problems with losing some image files after downloading them from my camera, but I am also blaming it on the tablet which had little memory or hard drive space. After searching amongst all my backed up files, I found them on the SanDisk flash drive. I like the fact I can have a backup hundreds of gigabytes of photos on a a teeny tiny flash drive that doesn't take up a lot of space. I didn't need to carry a backup hard drive with me on my trip either. I can now move some of the photos I want to share straight to my cellphone or laptop. I wish the program inside the SanDisk flash and Memory Zone app worked on my desktop because it makes moving large files faster and easier. Perhaps they could develop something like that in the future.Warning: I had to attach the SanDisk drive to a lanyard to keep from losing it it was so tiny. Perhaps other users might be less likely to lose things as I am, but it would be very easy to lose this out of one's pocket or purse without something to keep it grounded. The way the two different connectors slide could have been easier to operate, but having both a standard USB and micro-USB/OTG connector built into it was worth the inconvenience.

This is one of the best USB 3.0 flash drives I have ever bought! The sheer convenience of plugging into my PC on the one side (USB 3.0 port), & using the other end to plug into my phone/tablet (Micro USB port), essentially sells itself.Aside from that, it is small & convenient to carry around with you. It is such great convenience to copy/move any of my files, to & from my PC & my phone, or maybe to & from my phone & tablet. It keeps you from using a USB to Micro USB cable or Bluetooth, to transfer/move files between two devices, which is slower than just moving to this USB drive & plugging it right away to the other device. It's just faster & more convenient, & you really don't have to worry about not having a lot of space, since this USB 3.0 drive is 128GB.I definitely recommend this USB because of amount of space, speed of copying/moving/transferring files to each device, & the convenience of carrying this around with you as well.