Regarding the HASP dongle:

If you have the dedicated computer (strongly recommended choice), only the small purple key is to be used and is used to start the software. The software on the blue USB key is only useful for installation on a commercial computer. So it's a security. Keep it in case of a problem with the dedicated computer. It also contains the license that must be installed on the computer.

Installation on a commercial computer is very difficult because it depends on the type of computer, the version of Windows and the software installed. This therefore remains a solution that is strongly discouraged compared to the dedicated computer solution. The installation procedure is described on the pdf of the key that you will need to print beforehand and follow, possibly with the assistance of a computer specialist.