Boardview for MSI board MS-14121, archived as a 309 KB RAR, with no model name or revision given in the file name. MSI assigns MS- numbers to its own designs, and this one sits in the same MS-1412 family as the Megabook S420 board, though the exact model should be confirmed from the PCB. Use it to locate components, follow nets and measure at test points. Viewers such as OpenBoardView or FlexBV open typical boardview formats, and checking the revision on the board avoids mismatched placement.
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.