Service archive for the Lenovo ThinkPad Edge E540, built on the LCFC NM-A161 board with project code AILE2 and revision 0.1. LCFC is Lenovo's own ODM and follows the NM-xxxx numbering inherited from Compal. The 2.41 MB RAR probably holds the schematic, handy for tracing rails, finding the charger and EC circuits and locating shorted parts. Revision 0.1 suggests an early drawing, so compare it carefully with the revision printed on your PCB, since production boards can differ.
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 @alischematics. 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.