Can't start the scanner? SilverFast does not display a scanner in the welcome window and shows you "no scanner available"?
You can download the necessary driver from the respective manufacturer's website.
The following manufacturers require a separate driver installation:
Windows: Canon, Epson, Plustek (Plustek OF 7600i and older only)
macOS: Canon (macOS 10.13 drivers), Epson (if the scanner is not automatically recognized)
You'll find the drivers in the support section of their websites.
Here is the list of supported scanners: https://www.silverfast.com/show/sf9-scanners/en.html