Schematic for the Gigabyte GA-P55M-UD2 motherboard at revision 1.11, a micro-ATX design on the Intel P55 chipset for LGA1156 processors. Gigabyte marks the board revision on the PCB, and this file should be used only when the board shows 1.11, since a separate revision 1.0 schematic also exists. The PDF helps trace the standby and main rails, the CPU VRM and memory supply, follow the power-on sequence and identify components on a short. Opening it in a viewer with search makes locating nets quick.
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 @afsschematicfree. 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.