Second copy of the Quanta MK 2.0 schematic: the 834 KB size and the (1) suffix point to a duplicate of the same PDF, so one copy is usually enough. The document covers a Quanta-designed notebook board identified only by the MK code and version 2.0, without a retail model. Quanta builds boards for numerous laptop brands. Use the diagram for power rail tracing, short hunting and checking signal connections between the chipset, embedded controller and connectors, after confirming that the board marking matches.
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 @smschematics. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.