.5_en_us is Unknown file extension
Key Features: .5_EN_US File Extension
What is an .5_EN_US file?
The 5_en_us file extension seems to be in use for certain files that are mentioned on the internet. However, we have not yet found their original program nor any specific information about it.
If you know some more useful informations about the 5_en_us file extension, please let us know in the discussion below or on our forums.