RAR archive named Tebo-ICT view 4, apparently version 4 of the Tebo ICT boardview viewer and not data for a particular motherboard. The name gives no board or device. Viewers of this type load ICT-style and other boardview files, showing component outlines, references and net connections, so you can locate parts, follow signals and probe test points while measuring. Check the bundled files with antivirus before use, since older viewer packages often circulate repackaged.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.