Training presentation in PPTX format on the P8 series, most likely the ASUS P8 motherboard line for Intel Sandy Bridge and Ivy Bridge processors; the name does not confirm the brand. At almost 11 MB it probably includes diagrams and photos covering platform architecture, power delivery and troubleshooting steps. Open it in PowerPoint or LibreOffice Impress. It works as a learning aid rather than board documentation, so pair it with the matching schematic or boardview when repairing a specific board.
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 @BiosSchematicBoardviewNoLimit. Enginerys does not host this file.