Nexus USB OTG File Manager is a useful application for Android devices that allows users to open and copy files from any USB mass storage device with a FAT32 or NTFS filesystem using the USB OTG port. With this app, users can easily manage their files on USB devices, including editing filenames, adding directories, and deleting files.

One of the standout features of Nexus USB OTG File Manager is its support for Nexus products with a USB "OnTheGo" port, such as the Nexus 5, Nexus 7, Nexus 10, Nexus 6, and Nexus 9. However, it can also work on any device with an USB OTG port running Android 4.0 or later, including the latest Android 5.0 Lollipop.

Root privileges are not necessary to use this application, making it accessible to a wide range of users. It supports FAT32 filesystem for both data read and write, while NTFS filesystem is only supported for data read. Users can utilize USB sticks or SD card readers with any compatible USB OTG cable.

A notable new feature of Nexus USB OTG File Manager is the ability to play playlists (m3u and m3u8 files) and multiple audio files (mp3, aac, m4a, flac, ogg, and wav files) simultaneously from the USB OTG mass storage device. To enable this feature, users need to install the Simple Music Player app, available in both free and paid versions.

Overall, Nexus USB OTG File Manager is a reliable tool for managing files on USB mass storage devices. It offers convenient features and compatibility with various Android devices, making it a valuable asset for users who regularly work with USB storage.