Prerequisites are available in the installation package.
After you start the SuperOffice CRM Server installer you will find the "Install prerequisites". Here you can click the Advanced button to see what will be installed, and select or unselect if you want to do it another way.
To install the .Net Framework an internet connection is required. If the server where the installation is done don't have an internet connection, the correct .Net framework must be installad from another source.
A warning will be given when installing prerequisites if the installation of .Net framework fails, and ServerSetup will not start if .Net is not installed on the server.
The reason is the prerequisites installation program on the installation package contains only the bootstrapper for the .Net installation and not the entire setup program (approx 2.5 MB vs 250MB)