Schematic in PDF for the Gigabyte GA-H110M-WW motherboard, revision 1.0 judging by the R10 tag, packed in an 851 KB RAR archive. H110 boards of this kind are entry-level Intel LGA1151 designs. The diagram is useful for following the CPU VCore and memory rails, the standby power sequence, the Super I/O and the BIOS SPI flash wiring when a board will not power on. Unpack with WinRAR or 7-Zip, then confirm the revision printed near the PCIe slot or board edge matches the document.
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.