Small 216 KB RAR archive whose name refers to a Y0B mainboard, revision B, in the style of Quanta project naming. The name does not identify the laptop model or say whether the content is a schematic, boardview or other document. Given the size it is most likely a boardview or a compact schematic. Open it with WinRAR or 7-Zip, then view boardview files with a program such as OpenBoardView or FlexBV. Confirm the revision on your board is B before tracing signals or locating components with it.
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.