ASUS X541SC repair archive tied to board part number 60NB0CI0-MB1320, packed as a 137 KB ZIP. The 60NB prefix is the ASUS numbering for notebook main boards, and the same code usually appears on a sticker on the PCB, so check it matches. The name does not list contents; at this size it most likely holds a boardview. Opened in a viewer such as OpenBoardView or FlexBV, it helps locate components, follow nets and probe test points while diagnosing power or short faults.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.