RAR package for the ASUS X550WE board at revision 1.3, about 134 KB. Contents are not listed in the name; by size it is likely a boardview, which should be confirmed after extraction. A separate file exists for revision 2.0, so take care to pick the one matching your PCB, as component placement and designators can change between revisions. A boardview opened in FlexBV, OpenBoardView or similar software lets you search part numbers, follow nets, locate test pads and inspect areas around a suspected short.
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 @cyberlanelectonik. 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.