: Use a utility like WinRAR or 7-Zip to begin extraction from part1.rar , which will automatically pull data from part 4.
To access the "features" or files within this specific part, you must satisfy these conditions: sc23009-AC22v20.part4.rar
Given the typical use of such split .rar files in technical communities, part 4 likely includes the following: : Use a utility like WinRAR or 7-Zip