ASUS Prime H510M-D desktop motherboard boardview, revision 1.03, in a RAR archive. The layout data shows every part reference, pin and net, which speeds up locating VRM components, finding the SPI BIOS chip and tracing a missing standby voltage or a shorted rail. Extract it and load the file into boardview software like FlexBV or OpenBoardView, depending on format. Verify the PCB revision reads 1.03 before relying on the positions shown, as ASUS revises layouts between versions.
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 @BoardSchematic. 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.