Boardview for the ASUS K501LX board at revision 2.0, packed in a small RAR of 193 KB; the fz tag usually refers to the ASUS FZ boardview format. FZ files open in viewers such as FlexBV or the ASUS-oriented tools that support the format, showing component placement, net names and pin connections. Use it to locate test points, track a shorted rail to the failing part and identify unmarked components. Confirm the PCB is the 2.0 revision, since part placement can change between revisions.
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.