First part of a six-volume Windows 10 Pro 2004 multilanguage set, a 1.00 GB self-extracting EXE. The name says preactivated, so the image is a modified build. Running the executable rebuilds the contents only if parts two to six sit beside it; opening it with WinRAR or 7-Zip instead avoids executing unknown code. Scan it with antivirus before use. The result suits test installs on a bench machine, while customer systems should get official licensed media.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @laptopschematics. Enginerys does not host this file.