That's the beauty of this unit. It's wireless and works thru your iPads wi-fi without going thru the internet. If you want to use it thru the internet, that option is included with the wireless flash drive. FYI: the flash drive comes preloaded with several instructional videos. Just plug it into your computers 2.0 USB to watch them before you set it up to work wirelessly.
SANDISK has made this unit very simple to understand.

You download the SanDisk Wireless Flash app from the Apple Store and connect to it using your phone's WiFi.

it is wireless so no need for usb port

It has its own wifi.

This device generates its own wi-fi signal that allows you to connect wirelessly!

Join same network your iPad is on and transfer items wirelessly.

Has a connector for iPhone and iPad like the one you use to charge with

This item uses wireless streaming to Apple devices.

Yes. Use it wi-fi or USB

No

It should work with anything that is comparable with wifi

Does not even work with itself no idea how it would work with anything else. Save your money I returned mine

Although I have not used the Chromebook before, I would imagine it should work as long as you were able to download, install and use the app which is available for either Android or Apple devices. It uses a wifi signal so thusly need not be physically connected to the Chromebook.

This flash drive can be used with a Chromebook.

If you have a file manager app on your Kindle (ES File Explorer or the like), you can try moving the file you want into the Downloads directory on the device. Then you should be able to launch the SanDisk Wireless Flash app and select the Downloads option on the main page and it should show any files that are in the Download directory on your Kindle. Select the file and hit the Flash Device image and the file should transfer to the Flash Drive. Not sure what folder it will get copied into, but should be pretty easy to find. Wish there was a way to browse through all directories on the device (Kindle or phone or whatever) to select any file you want, but it seems limited to just the Photos and Downloads directories for now. Maybe an app update will fix this in the future?

This product is Doo. It is not stable, save your money. It does not work right even with itself.

Maybe the file is copyright protected or something of that sort. If you don' t have any difficulty with other types of files, I'm guessing this might be the case. I have transferred videos that I have made on my camera with no difficulty to my Kindle and vice versa from the Kindle to the SanDisk storage. The only problem I have experienced with movies is finding the right app with the right codecs to play certain movie files stored on the SanDisk.

Some files are protected files like some music and books and you may not be able to transfer those.

Need to check external memory acceptance capacity,

Try formating the stick and see if your kindle finds it

Did you format the stick?

Just ask the folks at BEST BUY. If they don't know the answer, they will find the answer for you.

Simple answer: Yes!

It's not a simple swap out though. For more into read this:
http://kb.sandisk.com/app/answers/detail/a_id/8075/~/sandisk-connect-wireless-flash-drive-and-microsdxc-support

I'm not too clear on precisely what it is you are asking, but if you're asking if you can transfer files from a 16GB flash drive to a 32GB or higher drive, the answer is yes as long as both are connected to a device capable of performing the transfer (computer or tablet or phone).

YES thats the beauty with this thing.

Just buy 32 or 64 new flash. You can't upgrade your flash drive

I keep mine close, within a foot or so of my iPad

On wi-fi alone, about 10-20 ft. If you use the internet option, you can access it from anywhere. I have used it on the internet, but the drive is much more useful if you simply carry it in your pocket.

50 feet

This device is a USB memory stick, not a wireless device.

I don't think so...

So far I have not been able to get the wireless mode to function while plugged in to something as a USB device. However, if it is plugged in to a USB charging port (where the USB device is not being accessed) then you can charge the flash drive while streaming to devices.

Unfortunately no once your plugged into a computer or reading device streaming is disabled.

I use it for that on occasion and it works fine

You should be able to if not create a folder name it music put all your music into that folder so that your car stereo may know what files to access.

I won't recommend this for a car stereo. It may work for your car, but atleast it didn't work for me. Going through other reviews on Amazon, many people had the same issue. Either it won't read or if it read, it will skip tracks.