Boardview archive for the MSI notebook board MS-16R1, with the MS-16R11 variant also named. MSI designs and numbers its own boards with the MS-xxxx pattern, where an extra digit usually marks a board revision or variant of the same model. A boardview shows part placement, nets and test points, which speeds up finding a short or checking power rails. Extract the RAR and open it with a viewer such as OpenBoardView or FlexBV. Check the exact number printed on your PCB, as the two versions may 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 @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.