Windows NT 3.5

Windows NT 3.5 is the second release of the Microsoft Windows NT operating system. It was released on September 21, 1994.
One of the primary goals during Windows NT 3.5's development was to increase the speed of the operating system; as a result, the project was given the codename "Daytona" in reference to the Daytona International Speedway in Daytona Beach, Florida.[1