RAR archive of roughly 122 KB named only after the board number 06245-1, which follows the Wistron numbering pattern used for laptops Wistron builds for brands such as Acer and Dell. The name does not say what is inside or which laptop model it serves, so open it and check whether it holds a BIOS dump, boardview or other repair data. Before using any contents, compare the board number and revision silkscreened on the PCB, and if it is a firmware image, read and save the original chip first.
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 @schematicslaptop. 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.