Small archive for a Z87-C board, an Intel Z87 chipset desktop motherboard name in the Asus range, without revision or content details in the file name. The 257 KB size is consistent with a boardview or layout file rather than a BIOS dump. After extraction, open it in a boardview program to locate parts and test points and to follow nets during short-circuit or no-POST diagnosis. Verify the revision marked on the PCB matches before trusting placement or net data.
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 @boardview. 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.
7-ZipWinRARThe Unarchiver (macOS)