Revision 0B schematic of the MSI MS-7122 motherboard, a 904 KB PDF sitting between the 0A and 1.00 versions of the same design. It shows the circuitry needed for board-level diagnosis: power rails, CPU core regulation, memory and chipset links, and connector pinouts. A technician can trace a missing voltage, verify the power-on sequence and look up component values. Revisions of this board differ, so check the revision silkscreened on the PCB and select the matching document before trusting references.
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 @pepeelectronica. 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.