RAR archive for a board or model identified as Z96JM, with revision 1.0 stated in the name. The name does not list the contents, so it may hold a schematic, a boardview, a BIOS dump or a mix of these. Extract it with WinRAR or 7-Zip and check every file before use. If it holds a schematic, it helps you trace power rails and signals. Before relying on any of it, confirm that the model and the revision 1.0 marking printed on the PCB match, because a different revision can have different parts.
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 @IT_SERVICE_WORLD. 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.