Lenovo LCFC NM-E341 boardview at revision 0.1, a larger 10.0 MB RAR that may hold more than one file. Revision 0.1 usually denotes an early board stage, so compare part placement against your PCB and its printed revision carefully. LCFC is Lenovo's manufacturing subsidiary, and NM codes identify its mainboards. The layout helps when finding components, mapping connector pins to nets, checking rails for shorts and locating SPI flash or EC parts. Extract and open it with OpenBoardView, FlexBV or a similar boardview tool.
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.