Apple does not allow their devices to be used via USB connection, see
https://manual.calibre-ebook.com/faq...one-ipod-touch
As for the Fire it is reporting it has no storage available.
This can usually be fixed by rebooting both the device and the computer. Also sometimes faulty/failing
SD cards cause it. If you have an SD card in the device, try removing it. If your device is not in
File transfer mode, you should swipe down from the TOP after plugging it in, tap on the USB notification
and change the USB mode to file transfer.