The original 1995 launch version. It lacked built-in support for USB and FAT32.
Are you planning to run this in a or on old hardware ?
Windows 95 remains the most significant turning point in the history of personal computing. For many, it was the first encounter with the Start menu, the Taskbar, and a truly graphical way to navigate a PC. Today, the search for a Windows 95 ISO archive is driven by a mix of digital preservation, nostalgia, and the technical challenge of running legacy software on modern hardware. The Significance of the Windows 95 ISO
The final iteration, which bundled Internet Explorer 4.0 and early (though finicky) USB support. Where to Find Windows 95 ISO Archives