Notes about the U3I file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The U3I file type is primarily associated with 'Sandisk Launchpad Application Installer file' by SanDisk Corporation.
.U3I extension is a install file used for the Application LaunchPad by SanDisk Corp. Note that some of these files may be viruses or other threats which is why it is recommended to scan files before use.