Gigabyte GA-D525TUD boardview for revision 1.3 of this compact Intel Atom D525 desktop motherboard. Rev 1.3 comes from the file name, and the D525 part follows from the model designation. The RAR archive is 1.42 MB. Open the layout in a boardview viewer to place components, trace the CPU and memory supply rails and find test points while checking for shorts or dead regulators. Gigabyte prints the revision on the PCB, usually near the slots, so confirm it reads 1.3 before relying on part positions.
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.