Wistron 19817-SA boardview, distributed in a 318 KB RAR that per the name holds a BDV file in GR format. The SA suffix usually marks a Wistron daughter or sub board rather than the main logic board. GR boardview files open in viewers such as OpenBoardView or FlexBV, letting you find parts, follow nets and locate test points on the small board. Check that the PCB silkscreen reads 19817-SA; the matching main board is a separate 19817-1 file. No laptop model is named.
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.