Repair archive for a Wistron-built motherboard carrying the project code LF145M and board number 13287-1, stored as a 2.67 MB zip. The name does not list the contents, but at this size it most likely holds a schematic, a boardview or both for that board. The five-digit number with a dash suffix is typical Wistron ODM numbering, used on boards for several notebook brands. Extract it and check what is inside, then verify that the silkscreen on your PCB reads 13287-1 before using it to trace power rails, signals or component locations.
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.