Lenovo boardview for LCFC board NM-B711, revision 0.1, from the Windu 2 project in its AMD variant, packed into a 3.59 MB rar archive. Windu 2 is the internal project name given in the file name, and NM codes come from LCFC, Lenovo's in-house manufacturer. Revision 0.1 is an early build and Intel versions may differ, so check the board marking and platform first. Open it in a boardview viewer to find parts, follow rails and measure test points while diagnosing faults.
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 @BoardSchematic. 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.