ASUS K46CM motherboard package at revision 2, a 29.1 MB ZIP whose name leaves the exact contents unstated. Open it to see whether it holds a schematic, a boardview file, BIOS or several of these. Material like this lets a technician trace voltage rails, find which component is shorting a line, and locate test points around the charger and CPU power stages. Compare the revision silkscreened on the PCB with rev 2 before relying on component values or reference designators from the archive.
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 @azvoltagemap. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.