An archive of repair files for MSI hardware (board MS-18VG). Shared as “TP.MS18VG.P77-power supplye .zip” — a .zip file, 118 KB.
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 @gunvantrathore. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip