The latest SD card standard is fast but flawed. This was in reference to a then-new update to the little-known SD Express ...

It could be an external hard disk, pen drive, memory card, printer ... devices and check if it solves the issue or not. Device Manager mainly displays your devices and drivers at the same time.

Linda File Manager is a free download from the Android App Market, and provides list-view navigation through all the file locations on a device – including USB and SD card devices.