ファイルマネージャー is a file management application that allows users to not only manage files on their device but also on USB memory and USB card readers. With this app, users can easily manipulate files within compatible USB devices connected to their Android device.

This app supports Android 4.1 and later versions (Android 4.4 and later for NexusHowever, users with Android 4.4 may not be able to perform file operations (copy, cut, delete, etc.) on SD cards connected to their device due to OS limitations. For users with Android 4.0 and earlier, the developer recommends using their other file management app, "FileAgent" (available on the Google Play Store).

ファイルマネージャー is compatible with the following BUFFALO devices for Android:

• USB memory
• USB card reader
• SD card

The app has been tested and confirmed to work on various devices, including docomo Xperia, Galaxy, au Galaxy, SoftBank GALAXY, Nexus, nova lite, Pixel, and more. For a complete list of tested devices and detailed instructions on functionality and operation, users can refer to the help documentation provided on the developer's website.

In addition to its core features, ファイルマネージャー offers additional paid plugins for enhanced functionality, including Google Cast support, UDF/ISO mount support, and exFAT support.

Overall, ファイルマネージャー is a reliable and convenient file management app for Android users, allowing them to efficiently organize and manipulate files on their device and compatible USB devices.